Optical Non-contact And Contact Digital Hand-held Tachometer Two In One Portable Tachometer Measurement Tools Memory value：large/Small/Later value。

Memory value：large/Small/Later value。

American style and simple style

Historical trend chart: minute/hour/day/week /RH temperature CARBON dioxide readings

Ltd1998year，Is a collection of instrument development、production、saleIntegrated enterprise，The registered trademark is“”， The English trademark is“”。Main productsyes：Tachometer、gasoline engineTachometer、Stroboscope 、thermometer、visible light、Ultraviolet illumination meter，Infrared temperature instrument、Wood moisture tester、Battery resistance voltmeter、4Half table multimeter

Regular size

Optical Non-contact And Contact Digital Hand-held Tachometer Two In One Portable Tachometer Measurement Tools Memory value：large/Small/Later value。Ships FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Features: Safe and durable, accurate and easy to use Contact and non contact measurement modes can be easily switched Small body, easy to hold