Features: Precise measurement: Wide measurement range, high resolution. Durable to use. Record data: Last value/minute. The values are automatically stored in memory and can be displayed in turn at any time. Application objects: Speed of motor and machine parts. Easy to hold: The tachometer is designed to fit in any hand. Large display: The LED display can clearly display the speed value in different places. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material:131×70× 29mm DT-2234C pocket tachometer Display: 5-bit 18mm word height LCD display Test range: 2.5-RPM 99,999-RPM Resolution: 0.1-RPM 2.5 999.9-RPM 1-RPM 1000-RPM or more Measurement accuracy: ± 0.05 1 word Sampling time: 0.8 seconds above 600RPM Effective measuring distance: 50mm 500mm laser light source Time base: 6MHz quartz-crystal oscillator Range selection: Automatic switching Power source: Single 6F22 9V battery not included Power consumption: about 35mA Instrument size: 131×70× 29mm Automatic memory of maximum, minimum, and final-measurement Package List: 1*No Touching Tachometer