Non Contact Digital Laser Photo Tachometer Gun RPM Tach Tester Meter Speed Gauge
Resolution: 0.1 RPM at 2.5-999.9RPM / 1 RPM at 1000 - 99,999 RPM. 1x English Manual 3 x Reflective tape. - Low battery indication. - Data hold function. - LCD with white backlight. - Powered: via 9V Battery - Supplied(not included).