Guns, rifles & accessories / Alex. Martin Ltd. Three pdr. light field gun equipment (47 mm canon d'accompagnement d'infanterie) Barr & Stroud. IR18 Mark II thermal scanner ERG. Vitreous enameld and glass-bond resistors London Electrical Manufacturing Co. (LEM), Silvered mica condensers Two pdr. light field gun equipment (40 mm canon d'accompagnement d'infanterie) : Plan, firing position, on wheels, Drg. nr. Z 3442 Eliminating corrosion in the power plant : Weir optimum de-aerator Barr & Stroud. chalcognenide glass type I, For optical elements in infra red systems Barr & Stroud. Calcium aluminium glasses, For infra red optics
