64 pages of course notes. Inside front page ' Bubb G J 1477939, Entry 35, Berryfields, Melksham, Sept 2-21 1943' Contains information of batteries and motors in general then specific notes on F24 camera and controls, night photography MkIII, torpedo…
166 pages of instrument course including notes with details and hand-drawn colour diagrams of aircraft instruments and gauges including pressure gauges, warning systems, clocks, compasses, bomb and gun sights, flight instruments and telecoms…
56 pages of course notes. Contains basic theory of thermometers, electricity, magnets, dynamos and batteries. Has more detailed notes on the atmosphere and gyroscopes followed by detailed description of Mk IV autopilot and all its component systems…