Simpson Insulation Tester Model 405 - Untested

Simpson Temperature Indicator Tester Model 385 -3L +++++++++++++++++++++++++++

Simpson model 385-3L series I temperature probe Gauge Meter USA

Megger Insulation Tester James G. Biddle Untested As Is Parts

VINTAGE SIMPSON 385-2 TEMPERATURE GAUGE- WORKS- SOLD "AS IS"

VINTAGE SIMPSON 385-2 TEMPERATURE GAUGE with LEATHER CARRYING CASE untested

TREK Model 541‑1 Electrostatic Sensor – Untested / As‑Is

Simpson Teledata Line Loop OHM Meter / Tester Mod.8455 - Untested