The roll contains six waxed linen drawings by British Railways Locomotive Drawing Office, Brighton of mechanical components for electro diesel locomotives. Drawing numbers W.13014; W.13035; W.13077; W.13097; W.13149; W.13311.

Class 73/0. Pipe clips. Class 73/1. Floor supports and details. Receiver suspension for AWS. Details of cab and holes on the cab plate. Cab floor and desk support details.