BS 3251 76th Edition, April 30, 1976
Specification Indicator plates for fire hydrants and emergency water supplies
Includes all amendments and changes through Reaffirmation Notice , October 1, 2012
Additional Comments: INCLUDE AMENDMENT 1
Published By:British Standards Institution (BSI)
Dimensions for sheet steel, cast iron, aluminium alloy or plastics indicator plates. Colours and finish, tests for impact resistance, colour stability, resistance to weathering, flexibility and security of removable numerals. Recommendations for fixing.