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).

ZES 246. Single Dial :

(a) 0.01W to 0.1W

(c) 1W to 10W

(b) 0.1W to 1W

(d) 10W to100W

ZES 247. Two Dial :

ZES 248. Three Dial :

(a) Having 0.01, 0.1 & 1W decades

(b) Having 0.1, 1 & 100W decades

ZES 249. Four Dial :

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

ZES 250. Five Dial :

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

Note : Please clarify Manganin/Constantan Wire.