For angle layout and inspection at the machine or bench, the HOLEX Protractor with solid graduated arc is a direct-reading angle finder covering 0 to 180 degrees with 1 degree scale divisions. It serves machinists, fabricators, and quality inspectors who need a dependable reference for marking out, setting up, and checking angles on parts and fixtures.
The tool itself is a metal protractor measuring 85 x 150 mm, compact enough for a toolbox drawer or an apron pocket. A clamping nut secures your setting so the angle does not shift while you transfer it to a workpiece, a saw, or a vise. It reads the way a classic machinist protractor should, one scale, one lock, and no batteries to fail mid-shift.
Key features:
• Solid semicircular graduated arc: one rigid piece for stable, repeatable readings
• Non-glare chrome-plated scale plate: figures stay legible under bright shop lighting
• Error limit of plus or minus 30 arc minutes: a stated accuracy you can cite in inspection notes
• Corrosion-resistant stainless steel (INOX) construction, built for daily shop-floor duty
Which angle measuring tool suits shop layout work?
An angle gauge you can read directly, set, and lock beats improvised references when parts, prints, and machines must agree on the same angle.
Applications: angle layout on plate and bar stock, checking bevels and chamfers, setting saw and vise angles, transferring angles from drawings, weld preparation checks, toolroom inspection.
Industries: welding, metal fabrication, toolmaking, precision machining, quality assurance, industrial maintenance.
Users: machinists, fabricators, welders, toolmakers, QC inspectors.
Is a steel protractor better than a plastic school one?
For shop work, yes. A plastic classroom protractor flexes and wears, while a steel protractor or another all-metal pattern holds its geometry through daily handling. This HOLEX model is built to the shop-grade standard, and its chrome-plated scale plate is the non-glare kind you can read under bright fixture lighting without hunting for the line.
What accuracy does a machinist-grade angle finder give?
The stated error limit here is plus or minus 30 arc minutes, equal to half a degree. That figure tells you the tolerance band to allow when you transfer an angle to a part or check a print dimension. For tighter angular tolerances, move up to a vernier or digital instrument, and keep a direct-reading tool like this for layout and general checks.
Does a shop protractor beat a phone angle app for layout?
For repeatable shop measurements, yes. A dedicated protractor registers flat against the work, reads the same way every time, and never depends on sensor calibration or a case-covered edge. Apps help for quick estimates on site. At the bench, where the number ends up on a part or an inspection sheet, a graduated tool you can set, read, and hand to a coworker is the tool to trust.
