400' HyCam 16mm high speed cine camera, manufactured by John Hadland (PI) Ltd, 1980-1985. Used by Rolls-Royce at Derby to film aero engine tests. Labelled Hycam/Made in England by/John Hadland (P.I.) Ltd/Mews House Laboratory/Bovingdon, Hertfordshire. Internal Serial Number: H149. Lens bookplate: E.L./14924. In wooden case labelled '400 FT HYCAM'. 400' HyCam 16mm cine camera, 1980-1985 1980-1985