weston instruments - technicalaudio.com

Set:. 2900
WESTON INSTRUMENTS
The newly expanded CROWN SERIES
distinguished by handsome, functional design
Weston's Crown Line represents the ultimate in meter design, performance and readability, The series now includes a 4.5·inch group
01 D.C. instruments . .. both A.C. ond D.C. types in the 2.l-inch
group. Their striking cases will enhance th e most modern ponels
or electronic equipment.
Clear plastic covers and exceptionally long scales aHord unmatched readability, with excellent natural illumination from top,
front ond sides. Confusing shadows are eliminated. In poorly
lighted areas, one bulb mounted above th e instrument furnishes
adequate illumination. Th e neutral tone of the multi -prism front
is designed to complement test equipment or panels of any color.
CORMAG@ mechanisms eliminate the need for external shielding;
they can be closely grouped on magnetic or nonmagnetic panels
without special adjustments or danger of intereffects.
Scoles ore exceptionally long for the (ose diameters; 5.3 inches
for the 4.S-inch models, up to 2.5 inches for the 2.5·jnch model s.
Bollistic characteristics ore greatly improved.
SPECIFICATIO NS
MECHANISM-Model, 1721 / 172 2/ 1741
Mod el 172A-Movo ble iron vone.
(Ofe
magnet mo¥ing <oil type.
ACCURACY _D.C. inslrumon h ore with ± 2 Y. 0 1 fu ll sc a le va lue,
Model 1722 reclifier typ o 0 -( indrumenl is with in ± 3% of full I(ole
whon u led on s ine wov e 60 cycle lource 0 1 norma l ro om lemperotu re
01 25 "C.
Mod el 1724 a·c inllfumen l II within ± 2 % 01 full $(ole value.
CASE -Crown shope with molded Bakelite bale a nd clea. plol lic co ve r.
MOUNTING- Models 1721 / 1722/ 1724-lnte rcha ng ea ble wi th ony 2. 5"
Mil Spec imtrumenl, in cluding the ilul h round Bake lite <aliI Weslon
506 Seliel.
Madel 1741_fou. #6·32 mo unt ing studl in flan ge. Co nfo.ms 10 ASA
09.1 · 1955 for 4'/,' pane l in slrumen t.
TERMINALS-8·32 BC .adi with nuls and wOl hen .
POINTERS_Lan<e type, block finil h.
SCALES-Modell 172 1/ 1722- f ul l 2.5"
panel instrum ents) 100 · arc.
Model 1724_ 2.2 5" long. 90 " arc.
Mode l 1741-5.3 " long. 100 · arc.
lo ng_liang II. Ihon mal t 3V3"
ZERO CORRECTOR-Screwdrive r type. 360 · 'ololion .
SHielDING-Modell 1721 / 1722/ 1471_CORMAG@ mechoni l m.
Model 1724 is unlhielded .
TYP ICAL
D-C MODel 1721 · 1741
VOLTMETERS_I , OOO Ohms Per Volt
S<ole Di v.
P,ice
Range
1721
1721
1741
$ 17 . 50
S12.75
'0
12 .75
17. 50
75
12. 75
17. 50
75
12 . 75
17. 50
300
60
13 . 25
18.00
lB . 50
"0
'0
AMMETERS
Range
Sca le Di".
Price
(Self· Contoined)
1721
1721
1741
$ 12. 25
$ 17 .00
3
60
12. 25
17. 00
12 . 25
17.00
10
12. 25
17. 00
'0
Elliernal
Scale Scale Oiv.
Price
Shunt Type
1721
1721
1721
1741
50 MV
100 ampi
50
$ 12. 50
$17.25
50 MY
150 amp.
75
12.50
17.25
50 MY
200 ompi
40
12 . 50
17.25
MILLIAMMETERS
Appralt. Re i . Scale Oiv.
Price
Range
172 1
1721
172 1
1741
80
$12
.
25
S17.00
•
8
12. 25
17.00
.0
1.1
12. 25
17.00
'0
20
12.25
17.00
I.'
'0
2
12.25
17.00
'0
12. 25
' 00
17.00
'0
0.5
.0
12.25
17 .00
'00
300
0 .33
12.25
17.00
500
0.2
12.25
17 .00
1·0· 1
12.25
17 .00
,
"'
.""
"
•
"
"
,
,.,.
,
,.
•
"
.,.,.
The' MASTER-2 4th Edilioll
Page 902
RANGES
MODEL 1724 A-C VOLTMHER
25-125 CYCLES
MICROAMMETERS
Appralt. Re s. Scole Oiv.
Prke
Ra nge
1721
1721
172 1
1741
20
5500
$22.25
$31.00
18. 25
25.25
" 00
.00
1230
15 . 25
2 1.00
'0
200
600
12. 75
17 .50
'0
230
12 .75
17 .50
'CO
1230
50·0·50
15 . 25
21.00
"
"
,
Rang e
"
""
,
"'
Range
Scal e Oiv.
."
"
"
"
P,ice
$ 18 .75
18 .75
18. 75
18.75
18.75
18. 75
75
'0
75
.0
300
" 0
,•
.,.
.,.
'0
"'0
,.0
ApPlolt. Rei . Scale Oiv.
50
,.
.
ApPlolt. Res. Scale Oiv.
2,000
7"
'0
Range
2•
,
.0
Pdce
$ 18. 75
18. 75
Price
$21 . 25
18.75
.
30
30
'0
Approlt.
Ohms/ Volt
10
10
27
"
"
70
130
260
260
Price
$16.00
16.00
16.00
16.00
16.00
16.00
16.50
18.00
20 .50
A-C AMMETER
25-500 CYCLES
3
MICROAMMETERS
Rang e
200
'00
30
'0
300
MllLI AMMETERS
Ra nge
"50
30
'0
15
30
80
RECTIF IER TYPE A· C MODel 1722
VOL TMETERS_ I ,OOO Ohms P.. Volt
Scale
Oiv.
Scale
Div .
,.
,.
'0
30
'0
ApP lolt .
Re, il. Ohms
0.125
0 . 035
0 .0 165
0.002
0 .001
Price
$16.00
16.00
16.00
16.00
16.00
A-C MILLIAMMETER
25-500 CYCLES
Range
15
,.
. 00
'00
Scale
Div.
.0
'0
,.,.
Appro ....
Rel;l. Ohms
.00
82
21
0 . 65
Price
$ 16.00
16.00
16.00
16. 00
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
Use Index ( ps . 2) fo r Quick. Easy Location of ALL Products
N"
Copyright by U. C. P.,
I",.
Sec:. 2900
WESTON INSTRUMENTS
201/301
PANEL INSTRUMENT SERIES
Th e Wes ton 301 l in e -famous an d tru l le d throu g ho u t industry
for ma ny ye ars-h oI unde rg o ne imporlant change I. The J l!J _
inch in strume nts look differe nt , are more vers oille, work be tter and longer. And now [I si ster line of 2 1h-inch In l lrumenls
hCl I bee n introduc e d-th e 201 Gr o up-ma tc hin g th e 301 in s tru me nt s in a ppeara nce a nd incorpOfo lin g the lome new fe atures.
Th o re nown e d Wes ton CORMA G@ me chan ism is now slond a rd eq ui pme nt . .. pe rmils mo un ti ng on mag ne tic o r no n ma gne ti c pane ls, ci oll! 10 o th e r in s trume nts, w il ho ut speci al adjuslme nls . II make s th e "301 " a nd " 20 1" imm un e 10 th e
c ff e d s 0 1 stray mo gn e tic fi e ld s. Ba lli s tic ch a ract e ris tiu oro
impro ved; even critica l damping con be obta in ed . New , mod·
ernist ico ll y styl e d Bo ke lite coscs- round or rec tangular-ore
sio ndord . These caSel a re in terchangeable for A. C. and D.C.
mode ls.
MODELS 201 /3 01-D.C. VOLTMETERS
MODEL 204 / 304 SER IES_A. C. VOLTMETERS
Approx .
1000 Ohms/ Va ll
Price
Ohms/ Vall
Scal e Oi....
Sca le Oi....
Prico
30'
204
/ 304
20'
Ra
nge
204
/3
04
Rango
20 1
201
' 01
'0 1
$18 .50
$17.50
1.
5
1
'0
20
50
$ 14. 25
$15.25
18.50
17
.
50
1.5
'0
75
14. 25
1S. 25
'0
18 .50
17 .50
10
5
50
.0
14 .25
15 .25
'0
18. 50
17.50
10
10
50
5
25
50
14.25
15 . 25
18. 50
17.50
15
8
'
0
14 .25
' 0
15. 25
'0
lB .50
17
.50
27
30
10
20
'0
50
14 . 25
15. 25
18 .50
17.50
50
50
15
75
14.25
'0
15 . 25
18 .50
17.50
70
80
'0
60
'0
14 .25
15 .25
'0
19.00
18
.00
115
26
130
50
25
50
14 .25
15.25
19 .00
18 .00
130
150
80
'0
14.25
15 . 25
' 0
'0
20.00
19.00
220
25
250
100
20
50
14. 25
15.25
20.50
19.50
260
150
'00
'0
75
14 .25
15.25
'0
22.
00
22.
00
260
50
500
200
14 .75
'0
' 0
15 .75
' 00
.0
14.75
A. C. AMMHERS - 25·5oo CYCL ES
'0
15 .75
500
25
50
Appro x. Resis.
15 . 25
16 . 25
Price
50
Sca le Di....
Oh ms
20. 25
Ran
ge
204
/
304
,204 / 304
20'
'0'
MODelS 201/ l 01 _ D.C. MI LLI AMMETERS
$18. 00
$17
.00
0.
125
1
50
App.
18 .00
App. Res is.
17.00
0.035
2
'0
Scal e Oi v.
18 .00
Res is.
17.00
Ohms
0 .0 165
Price
'0
RCln ge
201
17 . 00
l B.oo
20 1
0 .002
'0 1
20 1
50
5
' 01
'0 1
1
20
50
18
.00
100
17
.00
0 .00 1
88
$ll.75
$14 .75
10
50
1.5
75
18.00
17.00
'0
88
0.001
'0
13.75
14 .75
10
'0
2
l
B.oo
17.00
' 0
'0
13.75
0. 00085
'0
14 .75
'0
'0
18 .00
60
17.00
' 0
0 . 00072
'0
I l .75
14.75
50
50
5
25
50
6
8
Il .75
14.75
MILLI AMMETERS
A.
C.
10
20
50
2. 5
1.5
I l.75
14 .75
Approx. Res is.
15
75
1.5
2 .5
'0
I l .75
14 .75
Price
Scal e Oiv.
Ohms
10
40
2.5
2. 5
'0
13. 75
14.75
204/304
Rang e
20 4/ l 04
20'
'04
60
2.5
'0
2.5
'0
13.75
14.75
$17.00
$18 .00
.00
15
'0
50
25
50
2
2
13.75
14 .75
17.00
lB .oo
82
50
50
100
20
50
1
1
Il .75
14.75
18 .00
21
17 . 00
100
50
150
75
0 . 66
0 .66
' 0
I l .75
14 .75
18 .00
0 . 65
17.00
50
500
200
'0
0.5
0.5
'0
I l .75
14 .75
20B THE RM O SERIE5- TH ERMO· AMM ETER
60
' 00
0 .l 3
0 .3l
'0
I l .75
14 .75
Price
Ra
nge
Sco
le
Oi
....
....
Price
Sca
le
Oi
Ran
ge
500
25
50
0.2
0 .2
13.75
14 .75
$29.00
$29.00
40
1
20
8
800
40
40
0 . 12
0.1 2
I l .75
14.75
29.00
20
1.5
29.00
10
1000
'0
20
50
0.05
0 .05
Il .75
14. 75
29.00
40
29 .00
15
2
' 0
1-0·1
40
40
' 0
Il .75
14 .75
29 .00
10
40
29.00
50·0 -50
50
'0
50
2
2
13. 75
14 .75
5
25
29
.00
100· 0· 100
40
40
1
1
Il .75
14 .75
THERMO . MILlI AMM ETER
MOD ELS 201 / l01_ 0 . C. AMMETERS
App. Res is.
Scale
Sco lo Oi...
Price
Ohm s
Price
Range
Oi
....
Rong o
20 1
'0 1
101
$3l .00
'0 1
5. 2
100
20
1
20
50
$ 13.75
$1 4.75
5 .2
ll .OO
'1 15
20
1.5
75
'0
13.75
14 .75
5. 2
ll .oo
120
'0
2
40
40
I l .75
14. 75
1. 8
33 .00
' 00
'0
60
'0
I l. 75
14. 75
ll.OO
25
1.J
500
5
25
50
I l. 75
14. 75
Squared Go lvanom e te r wit h uniform 100 di... ision scale .
'Current
10
20
50
13.75
14.75
MODE L '08 SER IES- THERM O·AMMETER
15
75
' 0
14.75
15 .75
Sco le Oi ....
Price
Sca le Oiv.
Price
Ra nge
Ran ge
'0
.0
' 0
14 .75
15 .75
$lO.oo
50
1
50
$30.00
5
50
25
50
14.75
15 .75
lO.OO
.0
lO.OO
8
1.5
'0
5· 0-5
50
14 .75
l O.oo
40
10
50
2
30.00
10·0 - 10
40
14.75
30 .00
60
2.5
50
30 .00
15
15·0·15
.0
15 .75
30.00
20
.0
30 .00
20· 0.20
' 0
40
15 .75
40
30.00
4
30· 0·30
60
15. 75
50-0-50
THERMO· Mlll IAMM ET ER
50
15.75
App. Res is.
Price
Scale Oiv.
Ran ge
MO DELS 201/ 30 1_D .C. MICROAMMETERS
$66 .00
85
50
t
10
Scale Oiv.
66
.00
40
22
t 20
201/ 301/
Approx. Res.
Price
66.00
50
5
t 50
Range
206 '06
201 206
201
206
34.00
8
100
50
'06
10
20
50
4500
4500
$J UO
$32.00
34.00
5.2
'li S
50
20
'0
1520 5500 1520
26 .00 $24 .15 21.00
34 .00
5. 2
120
.0
JO
JO
60
1520 5500 152Q
25.00 23 .00 26.1111
l4. oo
5. 2
75
150
50
25
50
4150 1140 4800 1140
19.75 24.110 211. 75 24.00
l4.00
40
200
2.7
100
20
50
870 660 1230 600
16.15 22.00 11.15 22.00
2.4
34 .00
60
300
200
40
40
600
14.25
600
15.25 22.00
34.00
500
50
1.J
500
25
50
160
230
14.25
15.25
f or rOl1ges o f 100 MA o r highe r, expa nded sca le (On b. fUrni Jhed at 00
50-0-50
20
50
870
16.25
17.15
"'0
addi tio nal S8.00.
100·0· 100
40
600
600
14.25
15.25
t Va cuum The rmocouple lype
500·0-500 20
50
100
88
13 .75
14.15
'Current Squared Gal vanometer wit h ul1 iform 100 division 1(0 10
,
,
,
•
"
"
"V
,
,
""
,
"
,
,
'01
"
""
""
"
PRI CES SUBJECT TO CHANGE W ITHOUT NOTICE
Copyright by U . C. P., i ll,.
Usc l odex (P&:. 2 ) {or Quick, Easy Loadon or A ll Products
N~
Th~
MASTER -
24 th Edition
Page 903
Sec. 2900
WESTON INSTRUMENTS
PANEL INSTRUMENT SERIES, CONT.
20'2 / 302 RECTIF ieR TYPE A.C. SERIES A.C. VO LTMETER
1000 Ohm s/ Vol'
5co1e
Oi,...
,
2000 Oh ms / Vb ll
Scole
Oi....
Price
202
Rang e
'02
5
10
'0
50
50
IS
75
'0
50
100
'0
50
50
20.25
ISO
75
20.25
21.25
'00
'0
20.75
21 . 75
$20. 25
20.25
20.25
20.25
20.25
20.'25
Range
'02
$21 .25
21.25
21.25
21 .25
21.25
21 . 25
21 . 25
I
I.S
,
5
10
IS
20 2
'02
75
'0
50
50
'0
50
50
ISO
'02
$20.75
20.75
20.75
20.75
20.75
20.75
20.75
50
75
'0
50
100
Pr ice
20.75
20. 75
Scal e DiY,
0.5
50
50
40
50
I
2
5
$2 1 .75
21 .75
21 .75
21 .75
21 . 75
21 .75
21.75
21 .75
21 .75
21 .75
20.75
75
Ronllo
Scole Oi ....
Ran ge
100
50
40
'0
50
200
'00
500
A.C. MllllAMMETERS
Appro ... R'n ;t .
Ohms
"2
1030
$20.25
470
20. 25
270
20.25
ISO
20.25
A .C. MICRO AM METERS
A ppro ... R(ull.
Ohms
202
3400
$24.00
2400
22 .75
2000
22 . 75
10JO
20. 25
Pric(I
'02
$21 . 25
21 .25
21 .25
21 .25
Price
'02
$25 .00
23 .75
23 .75
21 .25
NEW 1751 SERIES
An imporlont new addition to th e Wn ton ponel ins tru me nt line. Not eworth y feo lurn in dude on 011Boke,ile co n with 910$1 wi ndow . .. the Westo n CORMAG@ n lf.shi e ld ed mec hon lsm ••. 4 " lon9
scole. Me thod of moun lln9 conforms to ASA C39.1-1955 fo. 4 V2" pone l inlhume nll.
TYP ICAL RANGES
D· C MODEl 175 1
Ro ngo
fSe ,f'co ntoined !
,
I
5
10
External
Shunl Type
50 MV
50 MV
50 MV
A· C MILLIAMMETERS
I
Sco le
Oi....
50
Appro. ,
Res.
470
5
50
150
Ronge
Price
$22.75
22.75
D·C AMMETERS
Scole
Di v,
50
'0
50
50
Scolo
100
150
200
Scale
Div,
50
75
'0
Rang e
1
5
10
20
50
Prico
$16. 25
16.25
16, 25
16, 25
100
200
'00
500
Price
$16.25
16.25
16,25
D.C MILLIAMMETERS
Approll.
Scol e
Div,
Res.
8B
50
8
50
50
1.1
40
1.1
50
2.0
50
1
40
0.5
0.33
'0
50
0 .2
Price
$16, 25
16.25
16.25
16,25
16 .25
16,25
16,25
16,25
16,25
D-C VOlTMETERS 11000 Oh ml per Valli
Sca le
Pr;c..
Diy .
Ran g ..
$ 16 .75
50
5
16.75
15
75
16 .75
50
'0
16.75
150
75
17.25
'00
'0
D·C MICROAMMETERS
Appro".
Scot"
Diy.
Prlco
Ran ge
Rei.
4700
$22.25
50
50
'19.25
1230
100
50
40
16.75
200
'00
16. 75
50
230
50.
RECT IF IER TYPE A-C-M OD El 1752
A-C MICROAMMETERS
Apprax .
Scato
Price
Diy.
Ran ge
Res.
525.25
40
2400
200
22. 75
750
500
50
A- C VOlTMETERS 11000 Ohms pe r Volll
5colo
Price
Div.
Range
$22.75
50
5
22. 75
75
15
22. 75
50
50
22
.75
75
150
22 _75
,0
'00
MARK II ANALYZER
Th e ne'" th in. line Mark II il a high ly se nsil iye and
e xtr e me ly ru gged val l·ohm· mil1iomm e le, de signed
fo r a wide ran ge of a ccura te test mea sure men l$ in
th e o lee tra nic fi e ld.
famou s CORMAG@ mechonlsm proteeh the in·
strum e nt againJ! fahe readings duo to magnetic
distu rban ces. Eleelro l latic shie lding auure l eccu-
,ole meo su,o monh 01 high d · c vollages. Fuses in
Ih e low ohmmeto r circuits proyen t bu,nou t if volt·
ag os are mi stakenly app lied. Interchangeable
parh etiminato all nee d fo, parh le leclion in the
evont replocemenls a re over necollory. Th e break.
proof case will withstand droppIng and thu s e liminate th e maior SOllrce of repaIr and maintenance
costs,
FEATURES
• Modern Th in-line De sign
• Sp ring Bock Je we ls for Maximum Sho ck Resislance
• Fused Resis tan ce Rang es
• Tran , il Swilch Po s llian to
Dam pon Movement DurIn g
Tra nspor tot lon
Mode l 980 Mark II
Prke
$44 .5 0
C ombination prate clive front cove r and
t ilt s land __ .. __ .... __ ..... __ .... _ ... _ .... $5 . 50
• FlIlIy Insul a ted Craalcproof Case
• Single Seleclor Knob for all
Functions a nd Rangel
• Wide Ang le Scal e fo r Maxim um
Visibi lity
• Precision Componenls-No Pa rh
So lection Required
S P ECIFICATIONS
Aceu roq: 2°t.., d ·c; 30/0' o ·c.
Sca le l eng th, 4 . 63"
Ra nges:
D. C Va lls, 1. 6, 8 , 40, 160, 400, BOO, 4000
. . . at 20,000 ohms/ Yo II.
A-C Valls: 1.6, 8 , 40, 160, 400, 1600 •• _ ot
1,000 ohms/ yoll.
DB Ra nge: ":'15 d b 10 + 54 db fin six rangesl .
D-C Milliamperol: 1. 6, 8, 80, 8 00.
D·C Microa mpe reS! 8 0.
Full Scale
Ce nter Scalo
Ohms Ra nge
1,000
R, I
25
10.000
R x 10
25D
100,000
2,500
R x 100
megohm s
25 ,000
R .. 1,000
10 megohms
250,000
R x 10,000
• Single Boord El ched Wiring
Circuit for Easy Malnlenance
• Sialic Sh ielded for Aceurat&
High Vollag& MOaSliremen t
• A_Way Combination Tilt Siond
and Prolocliye CO yo. Ayailable
CO le: Block molded HYCAR, with carrying strap_
Break. res istant .
Panel : Block mold ed HYCAR with e ngfayed whi le
markings .
Sile: 6.25" x 7.50" x 2.25".
Approx. We ighl : 2. 5 Ibs.
Ohms: Four dec(lde ,anges: 1 K 10 10 meg filII
scale: 25 ohms 10 250K center scole.
High Vo llo ge Probes, High yo ltage probes are
ava ila ble for mea surin g high yollage s up 10
20 ky (II 50 microampe,es or lou. Probes hO YG
mUlliplier resl slors encased in insu lated handles.
Mullipliers are ra ted wilh a fla sh yolloge of
30 kY o
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
T he AfA STER -
Pag e 904
2<1eh Edidon
Use Index ( pg . 2 J fo r Qu ic k. Easy LOCluion of ALL ProductS
Nee
Co/lyrig')I by U .
C. P., i nc_
Sec:. 2900
4 'I." PANEL INSTRUMENTS
D·C MILLIAMMETERS
Range
MODEL 961
MODEL 961-D-C INSTRUM ENTS
Raled accura cy 2')'0 of full scale-Scale 3.17"
(BO.3 mm)-Pe rmanent Magnet Moving Coil
Ra nge
1
O-C VOLTMHERS
Scale Div.
P.rice
$34.25
2
40
34.25
3
60
34.25
5
34.25
50
7.5
75
34.25
10
50
34.25
15
75
34.25
25
34.25
50
30
34.25
50
34.25
50
80
40
34.25
100
50
35.00
130
65
35.75
150
75
35 .75
200
40
36.50
250
50
38.00
300
60
38. 75
500
41.75
50
5elt·contained ranges Jlsted have sensitivity
of app ro_ima tely 200 ohms per volt up
and
including 200 volh; higher rangu a re 1000
ohms per volt.
50
'0
Sca le Div.
I
3
5
10
25
30
50
100
200
300
500
50
60
50
50
50
50
50
50
40
60
50
MODEL 963-THE RMO AMMETERS
Appro •.
Res.
Rated accuracy 2% of full
.•• Thermocouple type.
Price
$34.25
34.25
34.25
34.25
34.25
34.25
34.25
34.25
34.25
34.25
34.25
'0
7.3
2.'
1.25
1.0
2
I
0.5
0.33
0.2
frequency errors len thlln 2')'0 up to 6S mega.cycles.
Amps.
O·C AM METERS
Scale
Div.
Price
I
1.5
2
3
50
75
40
60
$34. 25
34.25
34. 25
34.25
Range
Scale
Oiv.
Prico
50
50
50
50
$34.25
34.25
34.25
34.25
5
10
25
50
Regularly supplied with self·contained shunts up
to and inc lud ing 50 a mperes, but can be sup·
plied wit h external 50 mv shunts and 5 loot
lO.065 ohm) leads.
O_C MICROAMMETERS
Approx.
Range Sca le Oiv. Res. Ohms
30
60
1600
50
720
75
75
450
100
50
250
200
40
<00
300
175
60
500
50
SO
.
Price
$50.00
48.25
48 .25
48.00
38.00
38.00
38.00
MATCHED A-C AND D-C
PORTABLE INSTRUMENTS
MODEL 433-A-C INSTRUMENTS
Scale Length 4. 04"-Accurocy within J/..
of 1 % - Movable Iroa Type - Shielded
Case Sile 5 -1/ 16 " x S1/.. " x 3 1/.. " -Welght
21/2 Ibs.-Hand Collbroted Mirror Scol es
Bakelite Case with Carrying Strap .
Note: These Instrumenh a re calibrated for
use in a ho ri zonta l position.
A-C VOLT~ETERS
Ma de with single, d ouble and triple ranges.
Fo r use on frequencies from 25 to 125 cycles.
Range
Pri ce
10, 30, 50, 75
$ 85.75
10/ 5, 20110, 30/ 15
87.25
450/ 300/150
103.75
600/300/150
103.75
750/300/150
103 .75
A-C MILLI AMMETERS
Made in single and double ranges only, for
use on frequencies Irom 25 to 500 cycles.
Range
Price
IS, 30, 75, SOD
$ 79.25
300/150
91.75
A-C AMMETERS
Made in single, double an d triple ranges
for use on fraquencies from 25 to 500 cycles.
All instruments have two binding posts;
double and triple range instrumants are provided with a range selector switch.
Range
Price
I, 1.5. 2, 3
$ 80.75
15, 25, 30
80.75
2/1. 5/2.5, 10/5
93 .75
1/1.5/0.75, 5/2.5/1, 10/5/ 1
131.75
20/5/2, 30n .5/l. 50/20/5
131.75
• • • Scale 3.17"
POWER CO NSUMPTI ON: I to 4 amperes Incl.
varies from 0.2 to 0.4 wlltt per IImpere. Appro~.
5 amperes lind above-Q.2 watt per ampere.
Ranges above 25 milliamperes are shunted and
have II drop of appro_imiliely 100 millivolts.
Range
~cale
MODEL 432-0-C AND
SINGLE PHASE A-C WATTMETERS
Double voltllgo and single or double cur·
rent ranges. solf·conta ined up to 300 vol ts
ond 5O.omperes, frequ encies from 25 to 125
cycllll.
El ectro~ynamometer Type
Accuracy 112 ~ I ' '-0 ___ Scale Length 4.04'
Case Site 5-h ' It SV.. " x 31j.. " __ Wt. 31j.. Ibl:.
Normal Volts Normo l Amps
Price
150/ 75
.1
$173 .75
Double Current Ronges
300/ 150
5/2.5
173.75
Scale
Div.
Price
Amps.
1
50
$43.00
5
1.5
75
43.00
6
2
<0
43.00
2.5
50
43.00
10
3
60
43.00
15
4
40
43.00 20
The ronges are all self·conloined.
•
Scale
Oiv.
Price
50
60
<0
50
75
40
$43.00
43.00
43.00
43.00
43.00
43.00
Through the Ille of ~pec i olly controlled chorocleristics, thermo ammeters clln be supplied to meet
the special requiremenh of the FCC for lintenna
amme ters,
MODEL 962-TYPE 30 VU METERS
Model 962 VU Meters are availa ble with II
choice 01 two scales. Type A streues t he lavel
in VU and is used largely in monitoring wi re
lines. Ty pe B emphasizes per cent uso of
transmitter output and is the standard fo r
broadcast service. Scale backgrounds dra
buff coiolld .
Sccde A or B..
..... Model 962-$55.50
MODEL 931-D- C INSTRUMENTS
Scale Length 4 .04" -Accurocy wi thin '/2 of
1 "/0 Core Magnet Moving Co li Type.
Case Sizo 5-1 /1 6" x S1/4 " x 3 V.. .. -Wei.ght 2
Ibs. Hand Calibrated Mirror Scoles Bakelite Case wit h Carrying Strop.
Note: These instruments lire calibra t ed for Ute in
a hori zontal position.
D·C VOLTMETERS
Price
Net Price
5,000 Ohms
1,000 Ohfns
Por Volt
Por
Volt
Rang e
$ 89.75
$ 78,25
1. IS, 50
103 .50
92.25
300/150/3
103.50
92.25
750/300/150
O_C AMMETERS
Price
5 79.25
I , 1.5, 1, 5
92.25
10/15/3
92.25
50/20/5
Self·contalned up to 50 amperes inclusive, but
can be supplied with eKternal SO mv shunts and
5 It. leads.
O_C MILL1AMMETERS
Range
Price
15. ISO
5 76.25
1500/lSO/ 15
89.75
15/ 1.5/.15
101.25
Single ra nge Milliammeteu with ranges above
can be supplied with exttrna l 50 mv shunts and
30 ma are shunted and hllve a drop of SO mv
= 5')'••
D-C MICRO AMMETERS
H' hR' ta nc~ ,--low Resistance---.
Range 'Ap ~?ox. OIlS
Approx.
Price
Res. Ohms
Price Res. Ohms
$103 .50
10
2300
101. 25 490
$101.25
100
2000
89.75
60
89.75
200
600
84.75
15
PRICES SUBJECT TO CHANGE WITHOUT NOT ICE
Use Index (pg. 2) for Quick, Easy Loca!ion of ALL Products
No.
The MASTER-24!h Edition
Poge 905
Sec:. 2900
WESTON INSTRUMENTS ·
MODEL 1477 ELECTRONIC MILLI-VOLT/ AMMETER
This yersatile Electronic Millj·YolI / Ammeler providc" in (I single, compact, light· weight unit measurement and
amplifi cation of a wide span of doc curren l and volloge rang es. Tho Weston Mo de l 1477 uses a unique electronic
servo-amplifier whose oltlreme high gain, cOlJpled .... ilh lull leedbock, providos a ccuracy an d dability wilhout the
od.,.eno affech resulting from vorig iiOll1 of line vollage or frequency, condition of omplifier lubos or olher variables.
No medlonkal switches or choppers ore usod. Th o device is (I true doc metor wilh zero.drift comporoble 10 (I
typicol permanent mognet movjng coil lrnlrumen!. II offers Ihe advantage of enonliolly zero power- drain from the
loure6 being meosured, ond combineli thi li with power·goin suificientto liupply 1 ma output to drive its oWn inditoti ng
me ter , and any edernal lood of 5000 ohms or len . The power output is oYailoble att er minol s in th e bock of the unit.
The indicating instrument, incorpo rating the fomous Weston se tf-shielded CORMAG@ mechanism which permits
it< u <e in do.e p 'o>< imiry to m09n.t i" Ii. ld , without offec!ing o ccu.oey, knife .edoe point", ond mirror seol", 011 cern ·
bi ne 10 provide dependoble performo nce a nd unmotched Visibility.
Cotib(otion is dependent only on precision resistors in th e ronge stnndord.
No tube le lettion is neeeuory when 'eplocements o,e needed.
Neither input or oulpul need be IIrounded, but if gro undinll is desired, either
side or some in termedin Is point con be grounded. Output polarity may be
se lected 01 will.
• Since zero·drifl is dependenl only on position of golvonomster coil, lanll -lim e
drift can be moinroined to less than 2 microvolts afler a few minules warm_up
lime.
• Gain stab ility and output linearity are both within 0.1 % 01 (onoe s obove 1 mY
or 200 /.10.
• Resolu tio n capability i5 within 2 microvolh o r .02 microomperes.
• Adjustable to zero· leI! or zero·cenler.
•
•
SPECIFICATIONS
Ranges, 10- 20-50- 100-200·500· 1000 mic roa mperes.
1-2-5 -10-20-50- 100-200-500-1000 millivolts.
Accu racy, 2% on lowesl current and lowest potential ran ge. 1 "10 o n
a ll others.
Instrument Scale: mirror, 7. 12" long i black and red pri nti ng o n white dial.
Approx. Sil:e: 7 J4" wide x 6%" high x 4%" d eep.
Appro:.:. Weight: 5% Ibs.
Power: 105·125 valls a·c 50·1600 cycles, 35 wal ls internall y fused.
Ampli fier Compone nt : Weston Model 1411 INDUCTRONIC® DC Am·
pl if ier.
Model
1477 -Price .
................................................................ $355.00
SUPER-SENSITIVE ANALYZER MODEL 779
ACCURACY: A.. C w ithin 3%; D-C within 2% to 250 volts; 3% on 1,000 volt
ra nge.
Size:
6 ~~"
x 9 1/," X 47;''' ( 162 x 232 x 124 mm)
Approx. Wt.: 6 lb. (2.72 kgs.)
A compact 26 range ultra-sensitive analyzer with fi ve d ·c voltage ra nges at a
sensitivity of e ither 1,000 or 20,000 ohms per volt . A-C tempe ra ture compensated;
precision resiston throughout. Supp lied in a ru gged solid oak case with a
removab le cover and convenient carrying handle. Test leads are prov ided.
RANGES
Current
D·C O nly
Volt,
D_C
2.5
A-C
2.5
10
50
10
50
10
Ma
250
250
1000
50
250
Mo
1000
Decibels
14 to + 2*
.1 Mo
1 M.
2 10 + 14 "
+ 12to + 28·
+ 26 to + 42t
+ 38 10 + 54tt
Ma
Ohms
0·3000
0·30,000
0·300,000
0-30 Meg
(6 milliwalls,
Amp
500 ohms, zero love I)
* Subslantio lly flal to 10,000 cycles .
-;- Substantially flol 10 3,000 cydes. tt Subs lonliolly flot to 1,000 cycles.
1
10
Model 779 Typ e 1
Price ..... _.... _..... $151 .25
Amp
............................ ..................................
MODEL 799 INSULATION TESTER
ACCURACY: Within W' of s cale length.
Size : 7<6 x SI,~
X
SCALE: 2.375 " (60.3 mm)
5" (86 x 133 x 127 mm)
Appro x. Wt.: 3.8 Ibs. ( 1.7 kgs.)
For leakage measurements up to 10,000 megohms at low vo ltage a t a maximum
tes t potential 50 volts. Test leads, tubes, batteries and oak case arc supplied,
RANGES : 0-10,000 megohms ( l ogarithmic scale)
Price .......... _ ........... $86 .5 0
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
The MASl'ER-2 4th &lidon
Page 906
Use Index
( p~.
2) fo r Quick.
Ea.s~·
Net
Location of ALL Products
Model 799
CO/JJ'r;gbt b)' U. C. P.,
ln~.
Sec. 2900
WESTON INSTRUMENTS
WESTON MODEL 981
PROPORTIONAL MUTUAL
CONDUCTANCE TUBECHECKER
FEATURES
METER MEASUREMENT OF HIGH LEAKAG E RESISTANCE: Proyidu
<1n accura te meter mealurement of leakage resista nce lIS high 4S
5 megohms between tube elements, thus be ing particularlv us.ful
for TV servicing and TV line production a nembly.
MULTIPLE SWITCHING f ACI LITIES: Protection against obsolescence
is assured through the uso of nine single circuit, twelve position .
selector switches.
TWIN SECTION TUBES: Three toggle switches mob it possible to
rapidly che ck a nd comp"r. the respective seelions of twin uletion
tubes at only one setting of t he seleclor , .... itches.
SINGLE SOCKET FOR EACH TUBe BASE REGARDLESS OF TUBE
CONNECTION: Eliminates th e possibility of p lugg ing a tube into
the wrong socket .
Gm MEASUREMENTS: Gm measurements are made more accurately
by using filtered d ·c plate. screen g rid and control grid pate n·
tials. A precision volta ge divider network and selector switch
allows a proportionate va lue of signal voltage to be chosen for
testing tubes having t ra nscondudances up to 30,000 micromhos.
';1nal voltaqes of 5.2, 2.6, 1.3, il nd 0.65 volls peak·to·peak havi ng
a requency of 5000 cycles a re provide d .
ROLL INDEX CHART -A complete Hieing of lu be tes! dolo is ovoi loble 01
Ille fli ck of 0 finger by meons of on easy·to· read, buill· in ro ll chort.
LEAKAGE TEST: The leakllge tests are performed a t a doc potentia l
of 125 volh. For each numbered position of the LEAKAGE TEST
switch, a specific tuba element is isolated and connected Into a
series ohmmeter circuit conshtin~ of the isol a ted element, the
125 volt d ·c potential, /II current lImiting redstar, a millia mmete r,
a nd all othe r eleme nh of the tube.
SPECIFICATIONS
VOLTAGE REGULATOR TUBES: A selenium redifie r supp ly furnbhes
200 volts d·c for testing of voltage regulato r tubes.
FILAMENT VOLTAGES: .65, 1.1, 1.5, 2, 2.5, 0.6&, 3.3, 5, 6.3, 7.5, 10,
13, 20, 27.5. 35, '17, 70, 115.
PLATE VOLTAGES: 9(), 130, 22D volts d·c; 22, «, 160 volts a·c.
SIGNAL VOLTAGES: 5.2,2.6, 1.3.0.65 volts pea k·fo. peak.
Gm RANGE: Up to 30,000 micromhos.
POWER REQUIREMENTS: 100 to 125 volts, 60 cydes slnglo phase a·c,
30 wath .
CAS E: Grey hammertone finish e d steel.
SIZE: 17.50" .. 13.25" .. 6.00".
WEIGHT: 23 1h Ibs. (1 0.7 Kgs.).
SUBMINI ATURE TYPE TUBES: A 'IS volt potential source facilitates
testing of subminiature t ubes.
Model 981 Type 3A.
......... _............................ Price $283.50
Model 749 Miniature (lamp Volt·Ammeter
Model 633
(lamp
Volt·Ammeter
and
(lamp·
Ammeter
MODEL 633 Type VA-T
Price
Model 633 Type VA-I /lnc1. Potenlial l eods) - 1000/ 250/
100/ 25/ 10 amperes o·c 700/ 350/ 175 vall S 0 · ( ... .......... .... $112 .50
Model 633 Typo A_3 - 2000/ 1000/ 500/250/100/ 50 amperes
a .c ............................................................................................. $105 .25
Model 9958 , SO foot Extension Cable, Plug & Receptacle for
Mode l 633 Types A· I, A·2, A-3......................................... S 72.00
l e ather Co,rying COle (Model 633 Types VA· I, A·I, A·2, A·3 ) S 13.50
l e alhe r Carry ing Case (Mode l 9958 - Coble. Plug and Re·
ceplocl e) .............. _..................... _ ................ _.................... _.. _ S 22.50
light weig ht ond rugged pockel·sile in ~ trum en t for quick easy se ..... 'c' ng.
Has self·shielded core magne l mec ha nism with Ipri ng ba cked jewel s, a nd
sha ller· proof PleKiglas window. Only one scole for all range l and func tionl.
Jaws toke up 10 I" rou nd, or P /. " x l/," re ctang ular conducto rs. fU in ished
.... ilil teu leeds in scuff· proof case.
Plug. In Ada pler a va ila ble for ma king bolh (Urre nt and voltage mea l ure·
ments . .. has female recepta cles on balll lides fa, plugging in load wit h.
oul distu rbing circuil be ing lelled . . . (anve nienl fo, lead inulion for
vollage chech • . . se ..... es os 10 to 1 divide r for low curront mesau re.
me nI, .
RATED ACCURACY, (Model 749) ± 3% full scale dl!lIedion.
RANGES , Current 300/ 1.50/ 60 / 30/ 15/ 6 ompore, a.c.
VolTage 600/ 300/1 .50 vall$ a .c.
Mode l 749 - $44.50 (omplete Plug.ln Adaptor - $4.75
Copy,ight by U. C. P., h ie.
NOTE-M od e l 633 instrume nts may b e used lor continuous
duty up to sao ampe res •
Approximate Dimensions and Weights
Mode l 633 Ty pes VA· I , A- I , A·2. A·3 .............. 13;DX4W·x2'h .. 3 1h Ibs.
l oot her Carrying Caso (Types VA·T, A-I, A·2, A-3) .... T4V2"x5'h" x3%"
2'/.1 Ibs.
Mode l 9958, 50 Foot Exlens ion Coble, Plug & Receptocle .......... .. 4'!.. Ibs .
Leather Carrying Case (Model 995B-Coble, Plug & Re ce ptocle}
14"x81f2"x33/4" 4 \;4 Ibs.
PricBl Subjoct To Change Without Notice.
Usc Index ( Vg. 2) lor Quick. Easy Location of ALL Producrs
Net
The MASTER- 24rh Edition
Pogo 907