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Decade Resistance Box

General :

Decade resistances boxes incorporate latest design switches so as to ensure low contact resistance. The moving contacts are constructed from phosphor bronze lamination to ensure long life and repeatability of results. Eleven position switches are employed.


Panel :

An insulating panel of bakelite enclosed in a elegantly polished teak wood box.


Resistances :

Resistances are non inductively wound properly warnished and aged for permeance of values over a long period. Imported double silk covered manganin or constantan wire is used in grade A & grade B resistance Boxes separately. Manganin has negligible temp. coefficient against copper.


Accuracy :

Accuracy is brought within the field 0.05% to 0.1 % for constantan coil (B Grade) and 0.02% to 0.05% for manganin coil (A Grade).


Single Dial :

(ZES 246)

(a) 0.01W to 0.1W

(c) 1W to 10W

(e) 100W to 1000W

(b) 0.1W to 1W

(d) 10W to100W

(f) 1000W to 10000W

Two Dial :

(ZES 247)

(a) 0.01W to 1W

(b) 0.1W to 10W

(c) 1W to 100W (d) 10W to 1000
Three Dial :
(ZES 248)

(a) Having 0.01, 0.1 & 1W decades

(b) Having 0.1, 1 & 100W decades

(c) Having 1, 10 & 100W decades
Four Dial :
(ZES 249)

(a) Having 0.1, 1, 10 & 100W decades

(b) Having 1,10,100 & 1000W decades
Five Dial :
(ZES 250)

(a) Having 0.1, 1, 10, 100 & 1000W decades

(b) Having 1,10, 100, 1000 & 10000W decades
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