REED DT-1236L Combination Tachometer

 Features:

• Photo tachometer and contact tachometer in one precision instrument
• Surface speed measurements in fpm or mpm
• Retains Min/Max and last reading for later recall
• Automatic reverse display direction depending on which measurement mode you are in
• Laser light for improved accuracy at a greater distance in photo mode
• Highly visible LCD readout
• Includes 3 contact adapters (2 cones, 1 funnel), surface speed wheel, reflective tape, batteries and hard carrying case

Specifications:

• Range/Resolution:
  Photo: 10 to 99,999 rpm/0.1 rpm ≤ 999.9 rpm,
  1 rpm > 1000 rpm;
  Contact: 0.5 to 19,999 rpm/0.1 rpm ≤ 999.9 rpm,
  1 rpm > 1000 rpm;
  Surface Speed: 0.05 to 1,999.9 mpm
  (0.2 to 6560 fpm)/0.01mpm ≤ 99.99 mpm,
  0.1 mpm > 100 mpm (0.1 fpm ≤ 999.9 fpm,
  1 fpm >1000 fpm)
• Accuracy: ±(0.05% + 1 digit)
• Sampling Rate: Photo: 1 sec. over 60 rpm;
  Contact: 1 sec. over 6 rpm
• Detection Distance: 1.96 in. to 6.5 ft.
• Laser: Class 2 red laser diode, 645nm wavelength
• Power Supply: 4 x 1.5V "AA" batteries
• Dimensions: 8.5 x 2.6 x 1.5"
• Weight: 9.9 oz  with batteries