MANY USES: Digital angle gauge for installing baseboards or cornices, shelving in alcoves and anywhere an angle needs to be taken; Easy to measure ruler markings CORRESPONDENCE ANGLES: After checking an angle, the measurement can be quickly transferred to any tool such as a table saw or miter saw to set up and make a perfect fit every time, speeding up and simplifying any angle job. /p> EXTREMELY ACCURATE: Precision etched stainless steel ruler blades and LED display registering in 0.1 degree (one tenth of a degree) increments, and with the central locking knob, settings can be firmly secured to reference and transfer angles /p> ZERO-FUNCTION: The knob makes it quick and easy to take accurate angle measurements and simplifies additional set-up work BUILT TO LAST: Provides years of accurate, repeatable performance across multiple platforms and comes with a long-lasting 3V CR2032 battery with auto-off feature to save power