The Protractor head is 2mm thick, Japanese stainless steel with a satin-chrome, anti-glare finish. It is 120mm x 90mm, the 180° scale starts at 0° in the centre to 90° on either side. All graduations are photo-chemically-etched and black filled for clarity.

The unique indicator arm has a deep vee-notch, rather than a pointer. This design greatly reduces reading errors due to parallax and makes setting the protractor to a specific angle far more accurate. The indicator arm locks securely in place using a solid brass knurled knob. All these features combine to form an easily read, easy-to-use measuring tool.

Along the top edge of the protractor head is a centre rule scale, zero in the centre with 50mm scales on each side. On each side of the head are 0 to 50mm scales, marked every 10mm. The Precision Protractor will allow you to lay out angles directly, set a bevel or set a mitre fence to a specific angle. The top and side scales are very useful when setting up machine fences. The protractor includes two removable location pins, which allow you to use it to quickly find the centre of a board up to 60mm wide.