GRAPHOPLEX is a complete range of high quality precision measuring instruments. Altuglas quality: high impact resistance and maximum comfort of use thanks to its high transparency equivalent to glass. Quality of printing of graduations: Chemical photoengraving technology for reliability, longevity, as well as reading comfort thanks to anti-reflective treatment. GRAPHOPLEX flat rulers and typometers are made of transparent Altuglas and machined 4 mm thick. The rules and typometers benefit from a lower dent for anti-wear protection of the marking, and better hold of the instrument during use.