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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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DMM & Mohm Meters

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Extech MG300

Extech Insulation Tester/MultiMeter with Wireless PC Interface

Extech MG300 / MG302 CatIV Insulation Tester / Multimeter Combines a 1000V Insulation Tester With a full-featured True RMS MultiMeter

Extech Instruments MG300 is a true RMS multimeter with built-in insulation resistance tester and the added safety of wireless datastreaming for remote monitoring and datalogging. By adding insulation testing capabilities to the ubiquitous digital multimeter, electricians are always equipped for insulation testing, helping to make it a more routine part of predictive maintenance with faster troubleshooting and repairs without additional tools.

The rugged and waterproof (IP67-rated) combination meter includes a digital insulation resistance tester (or megohmmeter) with 4 different test ...


Fluke Insulation Testers 5kV & 10kV


Fluke 1550c/1555 Insulation Resistance Testers
The Fluke 1550C insulation resistance tester offers digital insulation testing up to 5 kV, the 1555 up to 10 kV,  making them ideal for testing a wide range of high voltage equipment including switchgear, motors, generators and cables. With measurement storage and PC interface, they are the perfect tool for preventative or predictive maintenance programs designed to identify potential equipment failures before they occur.

•Test voltages to up 5 kV (1550c) or 10 kV (1555) and save time by trending on the spot only with Fluke Connect™
•CAT III 1000 V, CAT IV 600 V safety rating
•Warning function alerts the user that ...

Handheld MegOhmMeter

Handheld MegOhmMeter - Fluke


Handheld MegOhmMeter
  • Insulation resistance to 10Gohm (1507)
  • Test voltages to 1000V
  • Calculates Polarization Index & Dielectric Absorption Ratio (1507)
  • AC/DC voltage measure to 600V
  • Pass/Fail function for repetitive tests (1507)
  • Remote probe for hard-to-reach tests
Includes test leads, test probes, alligator clips, protective holster & batteries.