Extech RPM33-NIST Contact and Laser Photo Tachometer Combo Meter

Extech RPM33-NIST Contact/Laser Combination Photo Tachometer includes a NIST Calibration Certificate. The Extech RPM33-NIST can accurately measure RPMs, surface speeds and length. This teachometer is an all-in-one tool that can use a contact wheel for up-close readings, or a laser for safer (non-contact) measurements; the laser allows measurements to be taken up to 1.6ft (0.5m) away.