Extech 461895 Combination Contact Photo Tachometer

Features:

• Unique display where characters reverse direction depending on measurement mode you are in
• Large 0.4” (5 digit) LCD display
• Microprocessor based with quartz crystal oscillator to maintain high accuracy
• Tachometer memory stores last, max and min readings
• Provides wide RPM (photo and contact) and Linear Surface Speed (contact) measurements   
• Accurate to 0.05% with max resolution of 0.1rpm in either photo or contact mode
• Complete with tips and wheel for rpm or linear surface speed, four AA batteries, reflective tape and carrying case