Insulation & Continuity Tester

Vintage Metrohm Insulation & Continuity Tester - Boxed w/ Leads & Manual -

Eagle Y138D Digital Insulation Resistance Tester meter megger

Vintage (or old if you prefer) Metrohm Continuity/Insulation Tester

Vintage P.O. Edgcumbe Metrohm Loop Impedance Tester

Vintage Everett Edgcumbe "Metrohm"Insulation tester retro tool

METROHM Model 4B Phase/Earth Loop Tester Edgcumbe Instrument - Working

Metrohm Digital Level Meter - S63