[2-IN-1 TACHOMETER]Digital tachometer rpm meter can measure contact or non-contact speed, dual mode can meet your testing needs. Non-contact speed range: 0-99999RPM; Contact speed range: 3-19999RPM. [MULTI-FUNCTION]RPM meter features a high-definition backlit display to clear visibility in any environment, as well as data hold function and max/min function max/min measurement, real-time measurement for comprehensive data analysis. [HIGH PRECISION PERFORMANCE]Tachometer handheld high precision. Non-contact accuracy: ± (0.05%+1RPM); Contact accuracy: ± (0.1%+1RPM). Easily switch units between meters, meters/minute and feet/minute. accurate data. [HIGH-PERFORMANCE DESIGN]Low battery alert ensures worry-free use, automatic shutdown after 15 minutes to extend battery life (this feature can be turned off).Contact & non-contact digital tachometer has a wide measuring distance and is easy to operate. [WIDE APPLICATIONS]RPM tachometer is equipped with 4 different sizes of contact probes to adaptability to various measurement scenarios. Suitable for measuring the speed of motors, fans, pumps, turbines, gears and other rotating objects. Color: As Shown Material: plastic Package Contents: 1 x Tachometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.