All Joseph Marples try squares are manufactured to BS3322. Each square is tested for accuracy twice during manufacture and again immediately prior to despatch.
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.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.