卖1Pc Digital Non-Contact Laser Photo Rpm Tachometer M2Q5最好的价格

description: 100% brand new and high quality. instrument size: 131×70×29mm display: 5-digit 18mm high lcd screen test range: 2.5rpm 99,999rpm (rev/min) resolution: 0.1rpm (rev/min) (2.5～999.9rpm) 1rpm (rev/min) (above 1000rpm) measurement accuracy: ± (0.05% +1) sampling time: 0.8 seconds (above 60 rpm) effective measuring distance: 50mm 500mm (laser light source) time base: 6mhz quartz crystal oscillator range selection: automatic switching power source: single 6f22 9v battery power consumption: about 35ma automatically memorize the maximum value, minimum value, last measured value package include: 1* digital photo tachometer note: please allow 1-5mm errors due to manual measurement item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same hello, guys, thank you for visiting my store. Dear buyer,Welcome to our store. Thank you for your attention, Thank you for your support!Welcome to buy from us!