Original illustrated manual updated in 1946 from a wartime edition it features the Merlin engines of the time and also the then new technology of gas turbine jet engines there are some colour illustrations as well as some pull out larger illustrations covers every component and system of aircraft engines of the RAF at the time see pictures for examples of interior there are some hand corrections throughout it is complete with all pages and index has wear and tear from age and use outer cover has splitting to the spine outer material cover does not affect the pages as they are string bound