... inch Product Name: Digital Laser Photo Tachometer , Non Contact RPM Tach , Auto Tachometer [HS2] Features:100% BRAND NEW ... and can be displayed by turn anytime The RPM of motors and machine parts. The housing has ... comfortably in either hand. Digital display gives exact RPM with on guessing or errors. It is a ... to 99,999 RPM Resolution: 0.1 RPM (from 2.5 to 999.9 RPM) 1 RPM (over 1,000 RPM) Accuracy: ...