Nidec Shimpo Contact Type Handheld Tachometer, DT-107A

Capable of measuring low speed from 0.1 to 25,000 rpm without changing the range setting. Equipped with an LED display that is clearly visible even in dark environments. Available functions include: a memory function that stores maximum, minimum, and last-measured values plus 10 other measurements; and a unit conversion function that can display values in various units such as rpm, ft, in, mil, and m. Power is provided by two AA alkaline batteries.

Features:
Capable of measuring low speed from 0.1 to 25,000 rpm without changing the range setting

Capable of a wide range of unit conversion and indication
rpm, ft, in, mil, m

Capable of storing maximum, minimum, and last-measured values plus 10 other measurements

Two series are available: LCD type and LED type
LCD (liquid crystal display) type: the DT-105A series with a large display for numerical values and units
LED (light emitting diode) type: the DT-107A series with a display that is clearly visible even in dark environments

Lightweight and durable housing made of die-cast aluminum

Energy-saving design
Capable of long-time measurement with two AA alkaline batteries
(DT-105A: approx. 60 consecutive hours; DT-107A: approx. 30 consecutive hours)