Measuring angle - This aluminum protractor goniometer can measure internal, external and chamfer angles, providing great convenience for your woodwork. Measurable angle - The protractor features a clear 0-180 degrees scale with a fine black colour gradient, readable in the opposite direction. Aluminium material has good strength and good erosion resistance. Wide application - This protractor goniometer is suitable for construction, furniture construction, and fine wood work where a standard protractor or T chamfer is not suitable. Transmission angle - With this aluminium protractor, you can transfer odd angles to the miter saw, making it suitable as a 0-180 degree angle finder. Use scenarios - Custom furniture and trim work: measure internal, external, and chamfer angles on irregular components and transfer them to your saw or layout for accurate cuts. - Construction and cabinet making: align joints and match non-standard angles where a standard protractor or T chamfer would be insufficient. - Fine wood work and decorative panels: capture complex angles for bevels and joints, then reproduce them quickly and accurately with the miter saw. Specifications and attributes - Function: measures internal, external, and chamfer angles; transfers odd angles to a miter saw. - Compatibility: designed for 0-180 degree angle finding and transfer in woodworking and construction tasks. - Material: Aluminium alloy for strength and erosion resistance. - Performance: provides precise angle measurement and reliable angle transfer for accurate cuts.