Simpson Electric 372-3 Analog Ohmmeter
The Simpson 372-3 is Simpson Electric’s dedicated analog ohmmeter, spanning 0.02 ohm at the low end to 50 megohm at the high end across six selectable range multipliers – a wider resistance envelope than the resistance function on a general-purpose VOM, and with the range-per-range scale resolution that separates a dedicated ohmmeter from a multimeter’s resistance mode. The 372-3 is the meter to specify when the measurement is resistance and nothing else – motor windings, transformer coils, submersible pump insulation, and ground-continuity checks where the reading needs to read crisp against a single-purpose scale rather than share the needle with a multi-function VOM.
The instrument runs on a single 1.5 V C-cell for the lower five ranges and adds an 18 V battery assembly for the top Rx 100K range, and ships with alligator-clip leads for hands-free field measurement while both hands work on the device under test. The 372-3 shows up regularly on incoming-inspection benches for submersible-pump manufacturers and on repair-shop test stations where the operator is checking dozens of similar resistances per shift and prefers a single-function meter over a mode-select multimeter dial. As an authorized Simpson Electric distributor, BriceBarclay quotes and orders the 372-3 direct from Simpson along with the padded polyester case, replacement lead sets, and battery assemblies – request a configured quote and we will confirm specs and factory lead time.
Features
- Dedicated analog ohmmeter covering 0.02 ohm to 50 megohm across six ranges
- Six range multipliers: Rx1, Rx10, Rx100, Rx1000, Rx10K, and Rx100K
- Top-center scale values: 5, 50, 500, and 5K ohms for optimal mid-scale readability
- Bottom-center scale values: 30K and 300K ohms on the high resistance ranges
- Accuracy: plus/minus 3 degrees of linear arc length
- Analog needle-and-scale display with dedicated single-purpose ohms scale
- Runs on a single 1.5 V C-cell for the lower five ranges
- Adds an 18 V battery assembly for the top Rx 100K range
- Ships with alligator-clip leads for hands-free field measurement
- Compact single-function meter suited to bench inspection and repair-shop diagnostics
Applications
- Motor and Equipment Testing
- Submersible pump insulation and winding checks
- Motor winding resistance verification
- Transformer coil resistance measurement
- Ground-continuity checks on industrial equipment
- Solenoid and relay coil resistance testing
- Test-Bench and Inspection
- Incoming-inspection benches for motor and pump manufacturers
- Repair-shop resistance diagnostics
- Educational and R and D lab resistance measurement
- Quality-control resistance verification
- Field Service
- Cable and wire resistance checks
- Fuse and heater element continuity
- General industrial insulation resistance
- Bonding and grounding verification
