Safety lamp, Westphalian no.1, Clanny type, from the Royal Commission on Accidents in Mines, 1879-86, maker: A. Sieppel, Bochum, marking: makers name, c.1883 Safety lamp c.1883
Safety lamp, Westphalian no.2, Boty type, from the Royal Commission on Accidents in Mines, 1879-86, maker: W. Sieppel, Bochum, marking: makers name, c.1883 Safety lamp c.1883
Cased Wild T2 gyrotheodolite no.320852, with MW77 - Gyromat serial no.110, dated 1959. One of the two instruments used by the British surveyors of the time of the Channel Tunnel. Channel Tunnel theodolite, Swiss, 1959 1959