300mm (12") flat oval scale rulers
300mm flat oval scale rulers are available in either Rulex or Verulam (RIBA approved) brands.
Please see our scale selector for the scales available for the 300mm flat oval scale rulers:
Metric scales: No.1, No.2, No.3 and No.4 (No.4 available in Verulam only)
Riba conversion scales: No.43, No.44, No.45 and No.46 (Verulam only)
Imperial scales: No.203, No.204, Imperial and No.809 (Verluam only)