Protractor The body of this adjustable woodworker's ruler is made of stainless steel with laser engraved measurements for clear readability and durability. With a thickness of 2 millimeters, the ruler is slim yet solid. If you need an exact, sturdy angle measuring tool for home use, this woodworking protractor delivers. Adjustable Protractor Arm Features center positioning and scribing, and a knurled nut that adjusts the protractor arm. Lock the nut in the desired position to quickly and accurately identify angles and draw straight lines, for setting bevels, drawing radial lines, measuring and marking angles. Angle Ruler Our construction protractor provides both length and angle measurement functions, with an adjustable thumb nut. After tightening the nut, you can easily measure 0180 degrees and read the angle. The angle ruler is clear and accurate, and it can measure length (08 inch). It is suitable for fathers, men and women who are working in carpentry, construction and engineering. Note Slight color variation may occur; this does not affect use. Use scenarios Woodworking and cabinetry: accurately set and transfer bevels and miter angles to multiple pieces, ensuring precise joints and consistent results. Marking and layout on round or irregular stock: use the adjustable arm to draw radial lines and center references, then transfer angles onto material for cutting or drilling. Construction and engineering projects: measure and mark angles and lengths onsite for layouts, alignments, and inspection tasks, improving accuracy and efficiency.