Meter Bridge (Wheatstone Bridge)

Plug Type
(a) Manganin Coils Accuracy Ratio coils 0.05%
Resistance coils. 0.1%4 ratio coils 1, 10, 100 & 1000
series arm. 1 to 5000 ghms total. 11.110 ohms. Two
tapping keys with platinum contacts are provided for
battery and galvanometer.
(b) ditto but with 3 ratio coils Manganin coils
(c) ditto but with 4 ratio coils Constantan coils 0.1%