Precision Wheatstone Bridge 2755 (1 Ω to 10 MΩ) (DISCONTINUED)

Notice: This product was discontinued on Jan 20, 2020.

Model 2755 measures resistances from 1 Ω to 10 MΩ by operation of dials and switches. Batteries and a galvanometer are self-contained. The front control panel is provided with power and galvanometer circuit selectors, one ratio arm, and four measuring dials.

Model 2755 is also equipped with a Murray and Varley Loop Tester for convenient location of line faults such as "shorts" and "grounds" in power, telephone, telegraph, and signal cables.

  • No auxiliary attachment required
  • Galvanometer with a built-in protection circuit
  • Compact, lightweight (2 kg)
  • Built-in Murray & Varley loop tester


Dimensions 226(W)×182(H)×92(D)mm, excluding protrusions
8.90 × 7.17 × 3.60 in.
Weight Approx. 2.0kg
4.4 lbs
Measuring Range 1.000Ω to 10.00MΩ
Measuring Arm x 1mΩ, x 10Ω + 10Ω x 10 + 100Ω x 10 + 1000Ω x10 (min. one step: 1Ω)
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 Range, ±0.1% of reading on 100Ω to 100kΩ Range, ±0.3% of reading on 10Ω to 1MΩ Range, ±0.6% of reading on 1Ω to 10MΩ Range
Temperature Coefficient of Resistance Elements ±0.5 x 10-5 /°C at ambient temperature of 5 to 35°C (41 to 95°F), ±2 x 10-5 /°C at ambient temperature of 20 to 35°C (68 to 95°F)
Galvanometer (Built-In) Sensitivity 0.9 μA/div, Internal Resistance - Approx. 150Ω, External Critical Damping resistance - Approx. 800Ω, Period - within 1.5 Seconds
Galvanometer Power Source Three 1.5V batteries (built-in)
Operating Temperature Range 5 to 35°C (41 to 95°F)
Humidity Range 85% Max., Relative Humidity
Outer Case ABS Resin
Current Rating 0.01A at x 10 (1000Ω)
0.1A at x 1 (100Ω)
0.3A at x 0.1 (10Ω)
10A at x 0.0001 (0.01Ω)
1A at x 0.01 (1Ω)
3A at x 0.001 (0.1Ω)
Accessories Supplied at No Extra Cost Carrying Case
Instruction Manuals

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