From the Manufacturer Introducing Greenlee's first open jaw clamp meter, the CSJ-100., The CSJ-100 carries a Cat IV 600-Volt / Cat III 1000-Volt rating and has a measuring capability up to 200-Amp AC. Product Description Greenlee proudly employs the United States workforce in seven manufacturing facilities, where we design, assemble and manufacture certain products which meet the rigorous made in the USA or qualifying statements. We encourage consumers to consult our product packaging or marketing materials found on greenlee to understand the origin of particular products. Greenlee Multimeter Greenlee CSJ-100 Clamp Meter, Open Jaw – Haus Of Tools Cat IV 600V Safety Rated Meter GREENLEE CM-330 AC Clamp Meter, 400A The sleek, ergonomic body design and non-contact voltage detection (EF) function makes it the ultimate tool for electricians who are seeking quick verification of amperage or voltage, especially in tight spaces. Its detachable test leads fit in the back of the tester, allowing for effortless measurement and storage. Clamp & Jaw Meters | Electrical The Greenlee CSJ-100 (52020887) Open Jaw AC Clamp Meter, 200A AC, 1000V AC/DC, Resistance, 2000 Count, is a hand-held testing device with the following measurement capabilities: AC current, AC or DC voltage, and resistance The CSJ-100 has a jaw opening that accommodates up to 0., 63-Inch diameter conductors. Proven and Tested for durabilty and function in real world job site conditions