Display: Backlit LCD. Frequency adjustment: by button (+) and (-) on the front panel. Measuring range: 1 to 15,000 revolutions per minute. (1 to 250 Hz). Other functions: Hertz or RPM mode. Dimensions: 190 x 60 x 35 mm. Power supply: 4 LR03 1.5 V AAA type batteries (not included).
The strong points