A folder from De Havilland Aircraft Co Ltd Drawing Office entitled 'Engineering Standards Drawing Office Handbook'. This includes sections on drawing practise, standard memos, reference sheets and procedures. Also included in the folder are an index from a catalogue of standard parts, a memo relating to catalogue of standard parts updates dated 21st September 1960, a drawing office instruction sheet, procedure instructions dated 5th May 1960, am index of company standard parts drawings, a list of amendments to the drawing office handbook dated 28th August 1962, a procedure document with an attached memo entitled 'The Establishment of the Schedule as a means of identifying an assembly, and the parts numbering of assembly drawings', a memo dated 1961, a document entitled 'Introduction of the numerical index of drawings' dated 10th October 1960 with example pages attached, a procedure document entitled 'Acceptance procedure for castings, forgings, mouldings etc' dated 20th February 1961, a drawing office instruction sheet entitled 'Flexible hose units' dated February 1961, a memo relating to the Drawing Office handbook and catalogue amendments dated 28th September 1960, a memo entitled 'Pipe assemblies' dated 5th April 1961, a standardisation memo dated 26th January 1960, a procedure document relating to spares provision for propellers and ancillary equipment for the Red Top and Firestreak missiles, a note from the Technical Library entitled 'Drawing Office Publications' listing additional pages for the catalogue of standard parts and handbook, an index for part 1 drawing practise, and a table of recommendations for bolt clearances and dimensions for machine countersinks.