Division 1 Shape, constituent material and method of manufactureF1
United Kingdom Repealed
- 1.1Division 1.1
- 1.2Material used: any material with a density of 7 to 9·5 g/cm3, of a hardness at least equal to that of cast brass, not less resistant to corrosion and not more friable than grey cast iron, and with a surface comparable to that of grey cast iron carefully cast in a mould of fine sand.
- 1.3Division 1.3