【Precision Angle Measurement】 Measures 0-320° with 2′ arcminute precision. Ideal for tight-tolerance machining, carpentry, and metalworking tasks. 【Multi-Functional Detachable Design】 Features removable straight edge, right-angle blade, and base rule. Measures bevels, checks cuts, marks lines, and accesses hard-to-reach angles. 【2 Material Choices】 Available in durable stainless steel (rust-resistant) or high-tensile carbon steel to match your budget and working environment. 【Easy-Lock Vernier Scale】 Combines main and vernier scales for reliable readings. Locking screw secures angles for easy transfer or template use. 【Essential for Pros & Hobbyists】 Ideal for machinists, engineers, and DIYers to set up tools, verify cuts, and perform layout work with confidence.