Wire gauge, standard, steel, gauges 1 to 26, by Wynn & Timmins, inscribed Great Western Railway, c.1910 Wire gauge made by Wynn & Timmins 1905-1915
Wire gauge, imperial standard, steel, in leather wallet, by Chesterman, Sheffield, 1926, from London & North Eastern Railway No. 1 Drawing Office, Doncaster. Wire gauge from LNER 1926
