Handheld Digital Photo Tachometer RPM Meter Non-Contact Motor Speed Gauge(Red)
Resolution: 0.1RPM at 2.5~999.9RPM; 1RPM at 1000~99999RPM. Color: Blue / Red. Do not use it near explosive gases or in other potentially explosive areas. Product Weight: 90g. Product Size: 145 85 35mm/5.71 3.35 1.38".