The 461995 is a tachometer from Extech.

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
• Narrow beam Laser photo tachometer for accurate non-contact RPM measurements
• Measurements from up to 6.5ft from the target for improved safety and accessibility

The Extech 461995 is a Laser Photo/Contact Tachometer. The Extech 461995 is a laser-guided model for greater distance non-contact measurements.

The DT-107A-S12 is a tachometer from Shimpo.

The Shimpo DT-107A-S12 is an LCD Hand-Held Contact Tachometer.