Electronic Specialties Inc. 333 Pro Laser Contact Tachometer Electronic Specialties Inc. Pro Laser Contact Tachometer #333 Features Dual function Laser Photo and Contact tachometer with 12 different measurement types. Laser method allows for longer detection distance, up to 6 feet away. Contact function adds distance and frequency measuring to the unit's capability. More Features Professional Quality - Shock Absorbing Double Molded Housing Continuous Backlit Display RPM Range: 0 to 99,999 RPM Accuracy: + 0.05% + 1 digit Sampling time: 0.5 sec. Memory: Min/Max/Avg - Stores 10 Records Resolution: 0.1 RPM (0 to 999 RPM) 1 RPM (over 1000 RPM) Display: 5 digit LCD w/backlighting Uses include: diesel engines, generators, compressors, industrial engines and equipment, fans, gears and more. Includes storage case, 3 adatper and tape! FREE SHIPPING in the USA!