Quickly Mark Angles: The angle marks on the slanted edge, in 5 increments from 0 degrees to 90 degrees, helps with quick angle marking. You can also easily mark 22.5, 30, 45, 60, 67.5 using the included pin Easy to Carry: It can be easily placed in work , tool straps, and pockets, especially when it is inconvenient to carry with both hands Multi Functional: This small square has many convenient functions, such as accurately and quickly marking angles, easily marking parallel lines with a 1/16inch spacing between small holes on the square.Besides, the largest hole on the square guiding the 3/8 inch drill bit to accurately center on a 3/4 inch wooden board. Accurate & Clear Scale: The scale is on the small square, which is clear and easy to read, ensuring fast reading and not wearing out after prolonged use. High Quality: This small square is processed from high-quality aluminum alloy, which is rust proof, , and corrosion-resistant. Please note; the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! with Scribe Holes Material: Aluminum alloy colour: red Package Contents: 1 x Carpenter Square Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.