[Advantages]Compared with ordinary digital display angle rulers, our products have sliding rails, which can be used for T-shaped sliding, and the operation is more convenient. [Features] Angle measurement range: 0-360°, resolution: 0.05°/3inch, accuracy: plus or minus 0.5° full-screen large LCD display Power supply: 1 3V CR2032 battery (need to bring your own), Widened and thickened handle, widened and thickened knife-edge ruler with high-end atmosphere, width: 35mm; thickness 2.0mm; length: 200mm Metric and imperial scale: the smallest scale of the metric system: 1mm; the smallest scale of the imperial system: 1/32 inch Function keys: ON/OFF/ZERO, (switch reset key, short to reset, long to shut down HOLD (data hold) D/M (degree and degree-minute conversion) thickened anti-slip locking knob, easy and reliable operation [Key description] D/M key: conversion between degrees and minutes; HOLD key: keep measuring at any angle; ON/OFF/ZERO button: reset to zero at a certain position. Long ON/OFF/ZERO key to shut down .The zero function can be used for relative measurement. [Use] Suitable for construction, carpentry, masonry, machinery, decoration, home furnishing and related measurement and leveling work. Colour:black Material:ABS Size:20 x 3.5 x 0.2cm Package Contents: 1 x Digital angle ruler 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.