The roll contains c 10 drawings of acetate, waxed linen and ozalid of piping and frame arrangements for the electro diesel locomotive including the BRB type 4 D.E. locomotive; BR (SR) Electro-diesel and BRB A.C. locomotive. Drawing number range P14033 - P14046.

Class73/0 & Class 73/1. Layout of generator cables in engine room. Pipes & conduits. Layout of motor leads. Assembly of (desk?) air piping.