Since 1910， General Tools has grown to become the recognized industry leader for specialty hand tools and instruments. The CM660 Heavy Duty Clamp Meter is ideal for electricians， HVAC/R contractors， building maintenance professionals and maintenance/repair/operations (MRO) technicians. This clamp has 600 Amp true RMS， a non-contact-Voltage detector， and a dual readout.

16 functions and 49 ranges

Measures temperature from -58° to 1112° F (-50° to 600°C) using included "K" type stem thermocouple

ETL certified safe for CAT III 600-Volt， CAT II 1000-Volt use

Data hold and REL (zero) buttons

Uses beeper to verify integrity of diodes and check circuits for continuity

0 to 200μA/2000μA AC/DC ranges for measuring flame rod current with 0.1μA/1μA resolution using included test leads

Built-in non-contact-Voltage (NCV) detector with four sensitivity settings and audible and visual alerts

Large backlit digital LCD with two 6000-count readouts for simultaneous display of real-time current or voltage on primary readout and line frequency on secondary readout

Fast-response analog bar graph

Bright LED work light

Auto and manual ranging and minimum/maximum options

INRUSH mode for measuring surge current during motor startup

Includes double-insulated test leads with screw-on alligator clips， K type stem thermocouple probe and plug adapter， 3 AAA batteries， soft pouch， user's manual and 1 year limited warranty