Carpenter Square Set - 7” Rafter Square and 12” Right Angle Ruler, Aluminum Alloy Carpenter Measuring Layout Tool for Woodworking and Carpentry CARPENTER SQUARE SET: Package includes 1 7" rafter square and 1 12" framing square. The aluminum alloy square is laser calibrated for precise, clear markings and highly scratch-resistant for long-lasting accuracy. FRAMING SQUARE: 12" right angle ruler with 1/16" scale and additional 1/32" scale in the middle 2" for fine and accurate measurements. Comes with a retractable ledge support and scribing needle for precise markings. RAFTER SQUARE: 7” triangle ruler with 1/8” scale and 0-90° protractor scale, accurately measure angles and sizes. New drilling positioning function, according to different drill bit sizes, choose the appropriate hole for precise positioning. WIDELY APPLICABLE: The carpenter ruler set has multiple functions such as measuring, tracing, and marking angles. It can be widely used in various occasions such as carpentry, construction, mathematical measurement, and hand-made manufacturing. AFTER-SALES SERVICE: If there are any quality problems with the product during use, we will provide a refund or exchange. If you have any questions during use, please feel free to contact us and we will give you a satisfactory reply within 24 hours.