STEPPING Digital Laser Non Contact Photo Tachometer RPM Meter Professiona Digital Tachometer

True Sense Tachometer is a instrument to measure the rotational speed (RPM) with wide measuring range and high resolution It is featured with high accuracy measurement, quick measuring time and long detecting distance up to 500 mm (20 inch) with laser. This tachometer is very easy to use by applying a reflective mark (included in package) on target object, then aim at the mark by laser beam. This tachometer has wide range of applications include measuring rotating speed of machine, motors, model cars, wheels, lathe for metal or wood cutting work. Power Supply: 1 * 9V 6F22 Battery 2.) Display: 5-digit 18mm(0.7") LCD Display 3.) Measuring Range: 2.5RPM - 99,999RPMResolution: 0.1RPM at 2.5-999.9RPM, 1RPM at 1000-99,999RPM 4.) Measuring Distance: 50-500mm / 2-20in 5.) Product Size: 130 * 70 * 29mm / 5.12 * 2.76 * 1.14in 6.) Function : Display Last Value, MAX. Value, Min. Value 7.) Working Temperature: 0?-50?(32?-122?) 8.) Package Weight: 113g / 4.00oz