An inexpensive alternative to expensive taut band (swing needle) me ohmmeters, the M500 provides fast and accurate measurements to verify the condition of insulation. Impact resistant. Soft carrying case included. Measurement/function - insulation resistance. Range - 0 to 1000 me ohms. Applications: Test motor winding insulation and diagnose heat damaged, deteriorating insulation in hermetic refrigeration compressors, appliances, panel boards, relay control circuits, motors.