Extech 412440-S-NIST Calibration Source Checker

Extech 412440-S-NIST - NIST Calibration Certificate - universal handheld calibration source checker features: Easy to use pocket checker for simulating Current Loops; Pocket Checkers are easy to use and provide a quick and easy way for checking calibration of meters or controllers; Instantly determine if your device needs calibration or if sensor needs to be replaced; etc.