Note :During the test, keep the distance from the test object within 500mm.Digital Laser Photo Tachometer Non Contact RPM Tach Speed Gauge Engine.Features:Large LCD displayingWide measuring range & high resolution. The use of durable.Digital display gives exact RPM with on guessing or errors. It is a great tool to measureIn wood and metal working it can be used to accurately measure the speed of a lathe.The RPM of motors and machine parts.The housing has been carefully shaped to fit comfortably in either hand.The last value/min . value will be automatically stored in memory and can be displayed by turn anytime.Wide measurement range, high resolutionLarge screen display, clear readingLight Weight and hard shell ABS plastic, nice shape, easy to use.Specifications:Output: less than 1mwMaterial:Hard shell ABS plasticMirror Length:L50 x W25mmBattery length:L44 x W25 x D16mmItem Type:Non Contact RPM Laser Photo TachometerNet Size:L130 x W65mmScan Diameter:17mmPackage Size: L146 x W95 x D45mmUse for:Measure the speed of lathe motors and machineRange: 2.5 to 99,999 RPMPackaging content:1 x Digital Laser Photo Tachometer Non Contact Rpm Tach(Not Include Battery)About Our Company We are a professional car accessories supplier.