RIDGID CM-100 Micro Clamp Meter 37428The Ridgid CM 100 Micro Clamp Meter is a true RMS and AutoRanging digital clamp meter with a large capacity and measuring range. It can clamp around cables up to 30mm O. D. and measure current up to 1,000A AC DC. The clamp meter can also be used as a multimeter for 8 other functions, and will provide clear and accurate readings on its large backlit LCD. The slim and double moulded design provides easy one handed operation and can be conveniently used