Tachometer 1)contact tach range: 0.5~19,999 RPM 2)photo tach range: 2.5~99,999 RPM 3)surface speed range: 0.05~1,999.9 m/min

5 digits 18mm (0.6") Yellow backlight LCD

Accuracy: ±(0.05%+1 digit)

Sampling Time: 0.5 sec(over 120RPM)

Range Select: Auto-Ranging

Memory: Max. value, Min. value,

        Last value. Can store 96s data.

Time Base: 6MHz Quartz crystal

Detecting Distance: 50~500mm

Measuring Range:

  Photo Tach: 2.5~99,999RPM

  Contact Tach: 0.5~19,999RPM

  Surface Speed: 0.05~1,999.9m/min

Resolution:

Photo Tach: 0.1RPM(2.5~999.9RPM)

          1RPM(over 1,000RPM)

Contact Tach: 0.1RPM(0.5~999.9RPM)

            1RPM(over 1,000RPM)

Surface Speed: 0.01m/min(0.05~99.99m/min)

            0.1m/min(over 100m/min)

Battery: 4x1.5V AA battery