6L x 1.3W x 2.35H Machined aluminum frame Reset mode and self calibration mode Large clear LCD Display Instantly shows level, true vertical, and any angle in between Hold button freeze for convenient out of sight measurements V-Groove on the top plate for accurate registration on ...6L x 1.3W x 2.35H Machined aluminum frame Reset mode and self calibration mode Large clear LCD Display Instantly shows level, true vertical, and any angle in between Hold button freeze for convenient out of sight measurements V-Groove on the top plate for accurate registration on curved or cylindrical surfaces and tapped 6-32 holes in base plate for special mounting It can convert to different unit from degrees (°) to mm/m, to percent slope (%), to pitch (in/ft) plus it has backlight functions that allows you to read and work in the dark Easy to use with compact and portable design