List of Westinghouse parts of tramcar brake equipment - PV3 type and S6A Compressor Governor (beetleback type), dated 16/9/1931. Lists items, quantity, part number and price. Also includes Pressure gauges, safety valves and 8" packing leathers.Yields information about the spare part pricing for the type of air brake equipment fitted to SECV tramcars.Typed list (copy) on quarto paper.Has on rear in red pencil "Mr Hodosson"tramcars, equipment, rolling stock, westinghouse, pv3 brake valve, compressor governors, parts, list