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Resistance Box (Plug Type) (EE - 501)
Resistance Box Plug Type: Superior quality Heavy Brass metal blocks size 1/2" are bound to bakelite plate by means of nuts and screws securing rigid fixation and eliminating any chance of contact error creping due to loosening of plugs and lugs which are cut to fine taper and are interchangeable. Plug heads are machine moulded, of heavy insulated bakelite in beautiful shapes. The boxes are made of Teak-wood and nicely polished. Great care is taken in preparing the wire wound resistance. Selected double Covered Eureka Wire is wound in bakelite spools. Sufficient ageing and Heat Treatment is processed through to avoid any moisture effects. Solder Joints are sealed after calibration. All Resistors are calibrated on imported Testing Bridge Accuracy ± 0.1%.
Resistance in Ohms
Total Resistance
No. of Coils
(a)
0.1-1
2
5
(b)
0.1-5
11
8
(c)
0.1-10
21
9
(d)
1-5
10
4
(e)
1-10
20
(f)
1.50
110
(g)
1-100
210
(h)
1-500
1110
12
(i)
1-1000
2110
13
(j)
1-5000
11110
16
(k)
1-10000
21110
17
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Resistance Box (Dial Type) (EE - 502)
Resistance Box Dial Type : The dial studs are machine cut from phosphorous bronze and laminated bush contact are made from hardened copper phosphot bronze leaves. The laminated bushed are connected to the main central contact. Individual resistors are mounted separately. The values of resistors are machine engraved or Screen Painted. Technical Details : Double covered Eureka wire is wounded on Bakelite spools. Each resistor is processed for ageing and heat treatment to avoid shifting of the values and tested individually to accuracy after fixing Carbon Resistance. Resistance are calibrated on imported testing Bridge Accuracy +0.1% Single Dial Resistance Boxes
Resistance Box Dial Type : The dial studs are machine cut from phosphorous bronze and laminated bush contact are made from hardened copper phosphot bronze leaves. The laminated bushed are connected to the main central contact. Individual resistors are mounted separately. The values of resistors are machine engraved or Screen Painted. Technical Details : Double covered Eureka wire is wounded on Bakelite spools. Each resistor is processed for ageing and heat treatment to avoid shifting of the values and tested individually to accuracy after fixing Carbon Resistance. Resistance are calibrated
Single Dial Resistance Boxes
Ranges
Total Res. in ohms
0.1
1
100
1000
10000
Two Dial Resistance Boxes
0, 1-1
1, 10
10, 100
1,110
100 and 1000
11,000
Three Dial Resistance Boxes
0.1, 1, 10
111
1, 10, 100
(l)
10, 100, 1000
11,110
Four Dial Resistance Boxes
(m)
0.1, 1, 10, 100
1,111
(n)
1, 10, 100, 1000
Five Dial Resistance Boxes
(o)
0.1, 1, 10, 100 and 1000
11,111
(p)
1, 10, 100, 1000 and 10,00021,110
Condenser Boxes (Dial Type) (EE - 503)
These are made in single or more dials having condensers joined in parallels Each dial contains ten segment, High grade paper condenser housed in a teak wood case with engraved bakelite top or in Metal case with Screen Printed Top. Single Dial Condenser Box
Value in m.f-d
Total Value in m.f.d
0.001
0.01
Two Dials Condenser Box
0.001 & 0.01
0.11
0.01 & 0.1
1.1
0.1 & 1
Three Dials Condenser Box
0.001, 0.01 & 0.1
1.11
0.01, 0.1 & 1
11.1
Four Dials Condenser Box
0.001, 0.01, 0.1 & 1
11.11
Fixed Condensers (EE - 504)
Superior Quality of paper condenser enclosed in Bakelite case and Capacity value marked, fitted with two terminals.
Capacity in
A
B
C
D
E
F
G
M.F.D.
0.001 to 0.1
0.2
0.5
Post Office Box (Plug Type) (EE - 505)
Post Office Box Plug Type : Having three or four pairs of ratio coils of (10, 100, 1000 ohms) and 16 series coils of selected double covered wire enclosed in a teakwood case with Sunmica Top. The blocks are made of brass size 1/2" (Square Rod) nicely golden lacquered and resistance values are engraved on them. The top is manufactured from Bakelite. Two tapping keys are provided for Battery and Galvanometer. All plugs are interchangeable. All coils are calibrated on Imported Testing Bridge Accuracy ± 0.1%
(a) P.O. Box 3 Ratio
: Resistance 1-5000 ohms. : (Ratio 10, 100, 1000 ohms.)
(b) P.O. Box 4 Ratio
: Resistance 1-5000 ohms. : (Ratio 1, 10, 100, 1000 ohms.)
Post Office Box (Dial Type) (EE - 506)
Post Office Box Dial Type : The technical and constructed details are similar to Post Office Box Plug Type (Cat No. S105). Double covered wire is wound on bakelite spools and moisture free. The finish accuracy, working and workmanship is equally good as other All coils are calibrated on imported Testing Bridge Accuracy ± 0.1%. Serial Dial 1, 10, 100, 1000. (a) P.O. Box 5 Dials : Having one ratio dial with Galvanometer & Battery. (b) P.O. Box 6 Dials : Having two ratio dial with Galvanometer and Battery.
Sonometres (EE - 507)
With brass or Aluminium fitting & teak wood polished base.
Boy' Law App. (EE - 508)
Complete with double rods and glass tubes.
Inclined Plane (EE - 509)
Fitted on New-Wood board size 3/4 x 4" with Pan, Big Arc and Iron roller. (a) Reading Telescope: cat no. 1030 Complete with 175 mm objectives Eye piece 10x fitted on heavy base. (b) cat no 1032 -do- as above but special clamp for vertical movement with clamp and scale.
Tangent Galvanometer (EE - 510)
Having Brass parts and Permanent magnet compass with bakelite, 4 m.m. socket terminals.
Circular Coil (EE - 510/1)
Tangent Galvanometer (EE - 511)
But having aluminium parts, simple magnet compass and brass terminals.
Extra compass for above (EE - 512)
Rheostats (EE - 513)
Rheostats, Open type Single tube : Rheostats are made with a variety of resistance & current carrying capacity so as to satisfy every need. They are wound with heavely oxodised eurika resistance wire upon a porcelene tube dia 44 mm aprox. The tube is carrying upon bakalite ridder and the heavy duty sliding contact is of the phospor bronze with brass rod. 4 mm socket terminals are fitted, allowing for rheostat or potentiometer connection. Total resistance and maximum current capacity is marked on the slidder. Total
Permanent current loading should not exceed 75% of the marked values.Accuracy : The actual resistance of Rheostat shall be +20% -5% of the rated resistance as per our resistance chart. (as per ISI specification no. IS : 9051 S. No. 10.3)
TABLE NO. 1
Ube
6"
8"
10"
12"
14"
16"
18"
20”
Length (cm)
15
25
30
35
40
45
50
AMPS
Ω
A.
5.0
4.5
6.5
18
B.
4.2
24
26
32
C.
3.3
22
27
33
38
44
D.
2.8
37
52
60
67
E.
2.3
23
34
46
57
70
80
90
F.
1.8
55
74
92
128
148
165
G.
1.6
75
125
150
175
200
225
H.
1.4
64
96
160
190
220
250
290
I.
1.2
89
135
180
270
315
355
395
J.
1.0
116
235
350
405
460
515
K.
0.8
240
320
400
480
560
640
720
L.
0.6
540
670
800
930
1070
1200
M.
600
1400
1600
1800
N.
0.4
660
975
1300
1625
1950
2275
2640
2950
O.
0.3
1150
1700
2250
2850
3400
3950
4550
5150
Rheostat (EE - 514)
Single tube covered (perforated) Same as cat no 1001 but tube dia is 56 mm approx and totaly covered with powder coated zali to protect the rheostat .
5.5
14
28
42
48
58
19
66
76
86
41
56
71
102
114
47
93
139
185
82
120
245
285
325
360
115
170
230
345
450
500
295
365
445
520
590
675
300
700
925
510
676
835
1165
1335
1500
750
1250
2050
2300
840
1650
2070
2500
2900
3350
3750
1350
2100
3600
4380
5100
6000
6570
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