3D Multi Angle Measuring Ruler, 45° & 90° Degree Aluminum Alloy Woodworking Square Protractor, Miter Triangle Ruler High Precision Layout Measuring Tool Layout Scriber for Engineer
£5.89Adjustable set square can measure both 45-degree and 90-degree angles, and includes correction and marking functions, no need to flip the ruler when measuring, just slide the mark 45/90 degrees