Blundell Harling 12 Inch Verulam Oval Scale Rule No:203

The Verulam range of scale rules are unequalled for clarity and legibility, accuracy and design. The material used in ordnance scale rules is chosen for its toughness and stability. Available in metric and imperial dividings, and 300mm (12") and 150mm (6") lengths.

12 inch, Imperial designations, 1:500ft x 1:2500ft, 1:1250ft x 1:10560ft (6 inch= 1 Mile).