• Digital Laser technology for instant readings of 2.5 to 99,999 RPM--without contact!
• Large 5-digit LCD display, resolution 0.1 RPM (<1000 RPM), 1 RPM (1000+ RPM); accurate to +/- 0.05%
• Distance range 2-20" (50-500mm), temperature operating range 32-122F, 1.0 second sampling time
• Simple, point-and-shoot Laser-aim operation; auto-zero feature, min/max/last memory function
• Operates for hours on 3 AA batteries (incl.); overall dimensions: 6"L X 3"W x 1.25"H, 6 oz

Highly accurate, state-of-the-art scientific tool with digital Laser photo technology and 6Mhz crystal oscillator. Easy to operate for professional measurement and diagnostic test results: attach small strip of standard adhesive reflective tape (included) to object, aim and measure--RPMs instantly display on large LCD screen. Includes custom protective cushioned storage case, 3 AA batteries, instructions and 24" of reflective tape (additional tape widely available at hardware and other stores.) One-year warranty and Jack's Tool Shed Satisfaction Guarantee. Shipping weight 24 oz.