Parts List: 1Pc of 8 inch Angle Gauge OR 1Pc of 12 inch Angle Gauge Highlight description: [Locking Mechanism] This angle gauge features a locking mechanism designed to ensure precise and secure angle adjustments for measuring and can be easily adjusted to fit a variety of angles [180 Degree & Double Sided Scales] The angle ruler features a 180 degree angle ruler, the set is removable for easy storage and portability. Etched scales in both metric and imperial systems, with double sided scales on the front and the back [Portable] This angle protractor is easy to carry, suitable for indoor and outdoor woodworking projects, and is a necessity tool for woodworking enthusiasts or professionals [Magnetic Attachment Design] The angle finder is designed with magnetic attachment for flexibility and convenience, strong rivet magnets for strong and solid attachment. Its smooth design makes it easy to attach to surfaces and easy to use in a variety of settings [Multipurpose] The angle ruler is suitable for 45° line drawing, 90° line drawing, full angle 180° line drawing, depth measurement, circle drawing Detailed description: Description This angle gauge features 180 degrees scales in both metric and imperial graduations, and is easy to store and carry. The magnetic attachment design makes it easy to use and versatile. Key Features Multipurpose: The angle protractor ruler is suitable for engineering, angle measurement, student drawing, architectural design, carpentry, length measurement and more Ideal Gift: The angle protractor ruler is an ideal gift for students, craftsmen, architects and designers. Specification: Product Name: Angle Gauge Material: Half circle ruler material: aluminum alloy Straight ruler material: 2CR13 stainless steel Length(optional): 200mm/8 inch, 300mm/12 inch 8 inch ruler size 205x100mm 12 inch ruler size 305x100mm Thickness of half circle ruler: 12.5mm Thickness of straight ruler: 2mm Half circle ruler diameter: 100mm Note: 1. There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2. Please allow slight dimension difference due to manual measurement. [Locking Mechanism] This angle gauge features a locking mechanism designed to ensure precise and secure angle adjustments for measuring and can be easily adjusted to fit a variety of angles [180 Degree & Double Sided Scales] The angle ruler features a 180 degree angle ruler, the set is removable for easy storage and portability. Etched scales in both metric and imperial systems, with double sided scales on the front and the back [Portable] This angle protractor is easy to carry, suitable for indoor and outdoor woodworking projects, and is a necessity tool for woodworking enthusiasts or professionals [Magnetic Attachment Design] The angle finder is designed with magnetic attachment for flexibility and convenience, strong rivet magnets for strong and solid attachment. Its smooth design makes it easy to attach to surfaces and easy to use in a variety of settings [Multipurpose] The angle ruler is suitable for 45° line drawing, 90° line drawing, full angle 180° line drawing, depth measurement, circle drawing