Ball-point pen, Fisher Space Pen with tungsten carbide tip, hermetically sealed and pressurised ink reservoir, patented 1965 (model -#3,285,228: Anti-Gravity Pen) with accompanying explanatory leaflet, 1968-1978. Fisher anti gravity Space Pen, with explanatory leaflet and box 1968-1978
Tunnelling pick, steel with tungsten carbide inserts, for Channel Tunnel, French, c. 1990. tunnelling pick 1990
Components of ion source for Hermes electromagnetic separator, unsigned, British, 1976-1982 Components of ion source for Hermes electromagnetic separator 1976-1982
Wooden case containing a large light bulb mounted on a wooden base. Case: upright rectangular box with leather handle and lift-off lid. Bulb: Very large, pear shaped bulb with Goliath Edison screw cap and a coiled wire filament mounted in vertical zig-zag in a horizontal semi-circle on six supports rising from a central column. Includes two discs to prevent circulation of hot gas. The stem houses an exhaust tube. Wooden case containing a large light bulb mounted on a wooden base 1945