Characteristic 1.Relative /absolute measurements interchcange at any position 2.Angle and slope readout conversion 3.Data hold 4.The display will be turn off if you don't operate the device within 30 seconds ,the dispaly will automatic turn off if you don't operate it within 3 minutes 5.Compact and portable ,wide application 6.Four side built-in powerful magnets 7.Rechargeable battery Application It is widely applied in wood processing industry (especially in furniture manufacturing dustry) for the accurate cutting of wood angle ;auto repair industry for the accurate control of tire angle ;maching industry for the accurate position of tool working angle as well as the roation angle of large vehicle arm etc Technical Parameters 1.Measuring range:490 2.Resolution:0.05 3.Accuray:0.2 4.Repeatability:0.1 5.Battery:Rechargeable battery ,3.7V lithium battery 6.Work temperature:-10~50 7.Magnetized bottom make various stick -on measurements simple and accurate 8.Absolute zero measurement based on the level surface