TACHOMETER Constant RPM78 ( Contact / Non-Contact Laser Tachometer )  Constant RPM78 Tachometer, dengan dua pengukuran kontak maupun non kontak dalam 1 alat. Specifications Constant RPM78 :  * Contact measurement range ( tachometer ) : 0, 5 ~ 19999 RPM * Non-contact measurement range ( tachometer ) : 5 ~ 99999 RPM * Contact measurement range ( surface speed ) : 0, 05 ~ 1999, 9 m / min * Non-contact measurement range ( surface speed ) : 0, 2 ~ 6560 ft / min * Resolution : 0, 1 RPM ( = 1000 RPM )  * Resolution : 0, 01 m / min ( = 100 m / min )  * Resolution : 0, 1 ft / min ( = 1000 ft / min )  * Display : 5 digits * Detecting distance : 5 ~ 100 cm typically ( non-contact tachometer )