› Extech Instruments Combination Contact and Laser Photo Tachometer with NIST

The RPM33-NIST provides both contact (2 to 19,999 RPM) and non-contact (2 to 99,999 RPM) RPM measurements for enhanced versatility. Laser guided non-contact RPM measurements taken up to 1.6 ft. (500 mm) away for added safety. Readings are displayed on...