Features: The 2 in 1 Digital angles Finder Protractor Ruler with LCD Display combines numerical display and traditional calibration, delivering ±0.1° accuracy for engineering measurements and architectural drafting tasks. Crafted from nylon fiberglass, this engineering angles measuring tool withstands rugged job site conditions while maintaining light weight portability at 8.7oz. Professional contractors, mechanical engineers, and workshop technicians rely on its double measurement modes for precisely angles detection and straight edges calculation. Widey used for low light environments like construction sites and basement renovations, the backlit digital protractor ensures clear readings during night shifts or indoor installations. This multifunctional angles ruler simplifies complex layout tasks with unit conversion between degrees, replacing multiple conventional drafting tool. Specifications: Color: Black Component: Nylon Fiberglass Size1: Approx. 31.7cm/12.48in Weight: Approx. 132g Package Includes: 1Piece Protractor Ruler note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color