Manufacture: Yokogawa Product Description: Model 2755 Measures resistances from the 100 m Ohms to the 110M Ohms Range by operation of switches. Batteries and the Galvanometer are self-contained, for your safety. The Front Panel is provided with power and galvanometer circuit selectors, One ratio arm dia, and four measuring arm dials. Model 2755 is also equipped with a Murray and Varley Loop tester for convenient location of line faults such are "shorts" and "Grounds" in power, telephone, telegraph, and signal cables.
No Auxiliary attachment require
Galvanometers with a built-in protection circuit
Compact, lightweight
Built-in Murray & Varley loop Testers
Measuring Range: 1.000 ohm to 10.00 Megohms (Consist of four decades)
Can be used as 5-dial decade resistance box.
Specifications:
Measuring Range 1.000 Ohms to 10.00M Ohms
Measuring Arm x 1m Ohms, x 10 Ohms + 10 Ohms x 10 + 100 Ohms x 10 + 1000 Ohms x10 (min. one step: 1 Ohms)
Ratio Arms x 0.001 x 0.01, x 0.01, x 0.1, x 1, x 10, 100, x 1000 (M10, M100, M1000... Murray & Varley loop testing)
Accuracy +-0.1% of reading on 100 Ohms to 100k Ohms Range +-0.3% of reading on 10 Ohms to 1M Ohms Range +-0.6% of reading on 1 Ohms to 10M Ohms Range
Temperature coefficient of Resistance Elements +-0.5 x 10-5 / degrees C at ambient temperature of 5 to 35 degrees C (41 to 95 degrees F) +-2 x 10-5 / degrees C at ambient temperature of 20 to 35 degrees C (68 to 95 degrees F)
 "275597 Portable Wheatstone Bridge")