Extech 461750 Mini Pocket Tach Tachometer

Contact model with surface wheels enable tachometer to measure linear surface speeds in feet/minute, meter/minute, and yard/minute Non-contact integral light beam model with ideal measurement range up to 6-Inch (150 mm) distance Auto ranging with 0.1 percent basic accuracy Hold button freezes displayed reading Ergonomically designed and pocket sized housing with protective finger guard