Protractor 180° Stainless Steel Angle Finder – Precision Engineering for Every Workshop
Built for professionals who refuse to compromise on accuracy, this full-circle 180° protractor is laser-cut from 1.2 mm thick, satin-finished 304 stainless steel. The blade’s zero-glare surface eliminates reflections under harsh LED lighting while its laser-etched graduations remain razor-sharp even after years of solvent wipe-downs. Readings are engraved in both directions—0° to 180° left-to-right and 0° to 180° right-to-left—so you never have to flip the tool mid-measurement. Every line is etched to a 0.05 mm width, yielding a reading resolution of 0.5° with an overall accuracy of ±0.3° across the entire arc.

A 3-inch swiveling T-bar arm locks at any angle via a micro-knurled brass thumbscrew, giving woodworkers a rigid reference edge when setting bevels on table-saw blades or miter gauges. The arm’s underside is machined perfectly flat and lapped to a mirror finish, ensuring flush contact against stock as thin as 1/8 inch without rocking. Integrated 6 mm and 1/4-inch diameter center holes allow instant pivoting around dowels or drill bits for flawless radius layouts. On the reverse face, imperial and metric ruler markings (0–100 mm and 0–4 in) run along both straight edges, turning the protractor into a compact combination square for quick depth checks.

A CNC-milled through-slot accepts standard 3 mm mechanical pencil lead, letting you scribe precise angle lines directly onto timber, metal, or acrylic sheets without removing the tool. The 4 mm hanging hole doubles as a bottle-opener—because even meticulous craftsmen enjoy a cold beverage after a perfect miter joint. Supplied in a molded EVA case with a magnetic closure, the protractor is shielded from workshop grit and fits effortlessly into an apron pocket at just 95 g. Whether you’re drafting complex roof pitches, dialing in segmented bowl stave angles, or aligning camera rails for panoramic photography, this protractor delivers laboratory-grade precision with garage-grade toughness.