Mitre maker. Cutting guide for saws (Fareham PO15)

Copydex Mitre Maker. This is a gadget from the 1970s before everyone had power tools. If you are cutting mitres by hand, it's still a useful tool. You can set the guide to any angle, not just 90 or 45 and lock it in position. Your saw then moves between rollers that keep it upright.