A more affordable square than its rosewood counterparts, our beechwood squares are fitted with a blued steel blade held in place by three brass rivets and a brass plate on the front of the stock for extra lasting life. All our try squares are manufactured to BS3322. Each square is tested for accuracy twice during manufacture and again immediately prior to despatch from the makers. The squares are tested on both the inside and outside faces, our specification for the internal angle is twice as accurate as that specified in the British Standard, an accuracy better than 0.01mm/10mm blade length. All TOOLMAN squares are tested during manufacture and prior to despatch. They are tested on both internal and external faces. the internal faces are accurate to better than 0.001" nominal size.