7", Digital Angle Locator & Ruler, Digitally Displays In Degree, Stainless Steel Scale In 1/32ND & MM, Easy 2 Button Operation, Zero Button Sets Any Point To Zero, Lock Function Enables Blades To Lock At Any Angle, Automatic Shut Off After 6 Minutes Without Use, Includes: One 3V #CR2032 Lithium Battery & Instruction Manual.