1、This is a laser marking instrument for interior decoration measuring instruments. 2、It can double your work efficiency and make the measurement work not complicated. 3、It has many measurement functions such as horizontal, vertical and orthogonal. 4、+-0.5mm/1m high accuracy and it has lock and power switch linkage function. 5、Wide working temperature range from -10~40℃. Features: This is a laser marking instrument for interior decoration measuring instruments. It can double your work efficiency and make the measurement work not complicated. It has many measurement functions such as horizontal, vertical and orthogonal. +- 0.5mm/1m high accuracy and it has lock and power switch linkage function. Wide working temperature range from -10~40℃. Specification: High Brightness 650nm Laser Head. Vertical Level Accuracy:± 0.5mm/1m 5m Laser Width:<=2mm Laser Wavelength: 650nm Laser Output Wattage:<=1mW Automatic Leveling Range:+-4° Leveling Time:<5s Laser Emits Scattered Angle:110° Battery:2* 1.5V AA (Not Included) Working Temperature:-10°C~40°C Base Installation Thread:5/8'' Package List: 1*Main Unit 1*Bracket 1*Red Light Glasses 1*Tool Box