Tachometer Accuracy ±0.5% Digital Tachometer RPM Meter Contact/Non-Contact Handheld Tachometer 9.0-99999RPM Gauge Auto Range Laser Photo Tachometer with HD Backlit Display,Handbag,4pcs Contact Probe

【Highly Sensitive 2 In 1 Contact & Non-Contact Measurement】Digital tachometer specializes in measuring rotational speed,linear speed and light source flicker frequency.It combines both non-contact and contact measurement modes for more flexible use.Non-contact mode uses photoelectric technology to detect some fast and unmeasurable objects,and the contact mode measures by tachometer directly touching the measured object,which is an excellent choice for dirty and dusty environments.

【±0.5% High Accuracy Measurement & Auto Range】Digital tachometer has ±0.5% measurement accuracy and can effectively measure at a distance of 50-500mm(non-contact measurement)without touching the object measured,which can better ensure user safety.It measures rotational speed from 9.0 to 99999RPM for noncontact measurements,and from 1 to 19999RPM for contact measurements,with a wide range of measurement and high resolution,and it can automatically display the most appropriate test results value.