This 300mm 'Verulam' Flat Scale Rule is of professional quality. It has exceptional clarity and legibility with brilliant accuracy and design. The 'Verulam' Scale Rule has the following dividings / scales: 1:1, 1:100, 1:20, 1:200, 1:5, 1:50, 1:1250, 1:2500.
This scale rule is ideal for professional Architects, Civil Engineers and Mechanical Engineers.