Introduction

The Tachometer for RPM Testing is a high-precision handheld instrument designed for accurate contact measurements of rotational speed, track speed, and length. Equipped with a large, power-saving LCD display, it provides instant readings in both metric and imperial units. With 16 adjustable measurement units, it ensures versatility across various industrial applications. The robust aluminum housing guarantees durability, while automatic and manual memory functions allow easy recall of maximum, minimum, and last measured values. Ideal for maintenance, production, and quality inspection, this tachometer delivers reliability and precision in every reading.

Special features

Tachometer DT-105A for contact measurements of rotational speeds, track speeds, and lengths;
The measurement and measured value display are carried out as long as the measuring button is pressed
for accurate measurement of revolutions per minute, number of revolutions, length and speed in various metric or imperial units
16 adjustable units of measurement: (rpm; rev; m/min; m/h; ft/min; ft/h; yd/min; yd/h; in/min; in/h; mil/h; cm; m; in; ft; yd)
Tachometer DT-105A with large, power-saving LCD display
Handheld tachometer with automatic and manual measured value memory (MAX, MIN, last value and 10 measured values), available on the display
Robust aluminum housing with attachment option for a tripod (1/4-20 UNC thread)

Technical Data

Measuring ranges: (floating point):	Rotation speed: 0.1 – 25000 rpm; 6 – 9999.9 rph Speed: e.g. 0.02 – 3810 m/min; 0.9 – 99999 m/h; 0.6 – 99999 in/min; 0.05 – 12500 ft/min; 3 – 99999 ft/h; 0.02 – 4167 yd/min; 1.0 – 9999 yd/h; 0.0006 – 142.5 mil/h Length: 0.5 – 99999 cm; 0.005 – 99999 m; 0.1 – 9999.9 in; 0.01 – 99999 ft; 0.005 – 9999.9 yd
Measurement accuracy:	Speed: 0 – 999.9 rpm (±0.1 rpm) ±1 digit 1000 – 9999.9 rpm (±1 rpm) ± 1 digit 10000 – 25000 rpm (±0.01% of measured value) ±1 digit Speed and length: ±0.4 % of measured value, ±1 digit
Units of measurement:	Rotational speed: rpm; rph Number of revolutions (counter): rev Speed: m/min; m/h; ft/min; ft/h; yd/min; yd/h; inch/min; in/h; mil/h Length: cm; m; inch; ft; yd
Memory:	13 values (incl. MIN + MAX + last measured value) for 5 min after last operation
Resolution:	Length: 0.00254 m/pulse (with 6“ measuring wheel) Speed: 60 pulses/revolution
Advertisement:	5-digit, LCD 12 mm
Display interval:	1 second
Measuring range exceeded:	Display flashes
automatic shutdown:	5 min after last operation
Batteries:	2 x 1.5 V type AA; approx. 65 h continuous operation
Battery indicator:	“LO BAT“ flashes on the display
Temperature range:	5 – 45 °C
Humidity:	max. 85% relative humidity
Housing material:	aluminum die-casting
Tripod mount:	1/4-20 UNC thread
Dimensions:	183 x 60 x 46 mm (LxWxH)
Weight, net (gross):	approx. 350 g (800 g)

Why Choose Tachometer for RPM Testing

Choose the Tachometer for RPM Testing for its advanced accuracy, user-friendly operation, and multi-functional design. It measures rotational speed, linear speed, and length across 16 adjustable units—offering unmatched flexibility. The durable aluminum die-cast housing ensures long-term performance, even in demanding industrial environments. Its large LCD display makes readings clear and easy to track, while memory functions (MAX, MIN, and last value) simplify performance analysis. With an automatic power-off feature, long battery life (up to 65 hours), and tripod mounting option, this tachometer is engineered for precision, convenience, and efficiency. Ideal for laboratories, production lines, and quality control applications.

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Tachometer for RPM Testing

Compact and accurate Tachometer for RPM testing with LCD display, memory storage, and 16 adjustable units—ideal for industrial speed measurement.

Measures RPM, speed, and length in 16 units
Durable aluminum housing with LCD display
Memory function for MAX, MIN, and last value

Description

Measuring ranges: (floating point):	Rotation speed: 0.1 – 25000 rpm; 6 – 9999.9 rph Speed: e.g. 0.02 – 3810 m/min; 0.9 – 99999 m/h; 0.6 – 99999 in/min; 0.05 – 12500 ft/min; 3 – 99999 ft/h; 0.02 – 4167 yd/min; 1.0 – 9999 yd/h; 0.0006 – 142.5 mil/h Length: 0.5 – 99999 cm; 0.005 – 99999 m; 0.1 – 9999.9 in; 0.01 – 99999 ft; 0.005 – 9999.9 yd
Measurement accuracy:	Speed: 0 – 999.9 rpm (±0.1 rpm) ±1 digit 1000 – 9999.9 rpm (±1 rpm) ± 1 digit 10000 – 25000 rpm (±0.01% of measured value) ±1 digit Speed and length: ±0.4 % of measured value, ±1 digit
Units of measurement:	Rotational speed: rpm; rph Number of revolutions (counter): rev Speed: m/min; m/h; ft/min; ft/h; yd/min; yd/h; inch/min; in/h; mil/h Length: cm; m; inch; ft; yd
Memory:	13 values (incl. MIN + MAX + last measured value) for 5 min after last operation
Resolution:	Length: 0.00254 m/pulse (with 6“ measuring wheel) Speed: 60 pulses/revolution
Advertisement:	5-digit, LCD 12 mm
Display interval:	1 second
Measuring range exceeded:	Display flashes
automatic shutdown:	5 min after last operation
Batteries:	2 x 1.5 V type AA; approx. 65 h continuous operation
Battery indicator:	“LO BAT“ flashes on the display
Temperature range:	5 – 45 °C
Humidity:	max. 85% relative humidity
Housing material:	aluminum die-casting
Tripod mount:	1/4-20 UNC thread
Dimensions:	183 x 60 x 46 mm (LxWxH)
Weight, net (gross):	approx. 350 g (800 g)