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Resistance Box (Plug Type)
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Resistance Box (Plug Type) (AVI-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

5

(f)

1.50

110

8

(g)

1-100

210

9

(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)
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Resistance Box (Dial Type) (AVI-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

(a)

0.1

1

(b)

1

10

(c)

10

100

(d)

100

1000

(e)

1000

10000

Two Dial Resistance Boxes

Ranges

Total Res. in ohms

(f)

0, 1-1

11

(g)

1, 10

110

(h)

10, 100

1,110

(i)

100 and 1000

11,000

Three Dial Resistance Boxes

Ranges

Total Res. in ohms

(j)

0.1, 1, 10

111

(k)

1, 10, 100

1,110

(l)

10, 100, 1000

11,110

Four Dial Resistance Boxes

Ranges

Total Res. in ohms

(m)

0.1, 1, 10, 100

1,111

(n)

1, 10, 100, 1000

11,110

Five Dial Resistance Boxes

Ranges

Total Res. in ohms

(o)

0.1, 1, 10, 100 and 1000

11,111

(p)

1, 10, 100, 1000 and 10,00021,110

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Condenser Boxes (Dial Type)
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Condenser Boxes (Dial Type) (AVI-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

(a)

0.001

0.01

(b)

0.01

0.1

(c)

0.1

1

(d)

1

10

Two Dials Condenser Box

Value in m.f-d

Total Value in m.f.d

(e)

0.001 & 0.01

0.11

(f)

0.01 & 0.1

1.1

(g)

0.1 & 1

11

Three Dials Condenser Box

Value in m.f-d

Total Value in m.f.d

(h)

0.001, 0.01 & 0.1

1.11

(i)

0.01, 0.1 & 1

11.1

Four Dials Condenser Box

Value in m.f-d

Total Value in m.f.d

(j)

0.001, 0.01, 0.1 & 1

11.11

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Fixed Condensers
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Fixed Condensers (AVI-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

1

2

5

10

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Post Office Box (Plug Type)
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Post Office Box (Plug Type) (AVI-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.)

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Post Office Box (Dial Type)
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Post Office Box (Dial Type) (AVI-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.

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Sonometres
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Sonometres (AVI-EE - 507)

With brass or Aluminium fitting & teak wood polished base.

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Boy' Law App.
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Boy' Law App. (AVI-EE - 508)

Complete with double rods and glass tubes.

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