Photo/Contact Tachometer DT-2859 is used to measure rotative velocity, surface speed, frequency of motor.
Laser:2.5 ~ 99,999 r / min
Contact:0.5 ~ 19,999 r / min
Surface Speed:0.05 ~ 1999.9 m / min 0.2 ~ 6560 ft / min
We are the MANUFACTURER of measuring instrument in CHINA.
For more details, please feel free to contact Lisa. Thank you!
Product description: The QT-SM01 is a soil moisture meter, consisting of a soil moisture sensor and a portable data logger. It can apply to agriculture, forestry, environmental ...