Tachometers: Type - Digital Tachometer; Style - Handheld, Contact; Display - LED, 5 digit 0.4 in(10mm); Range - 10000 to 25000 rpm; Measuring Units - RPM, YPM, mPM, FPM, IPM, MPH and Length; Memory/Capacity - C-MOS Chip / 13 readings for 5 min; Construction - Die-cast Aluminum; Parts Included - (2) cone and (1) funnel adapters, 3-1/2 in extension shaft, 2 AA batteries, carrying case and 1 master wheel; Additional Information - Detection: Optical Coupler 60 Pulses/rev; Manufacturer Series - DT-107
Additional Info: Detection: Optical Coupler 60 Pulses/rev