working drawing

plural working drawings

1. A technical drawing or plan to scale which serves as a guide for the construction or manufacture of something such as a building or machine.

   But in neither case had the preparations proceeded beyond contemplation; no working drawings of any kind been prepared.

   1941 October, “Notes and News: Stroudley's 2-4-2 Designs”, in Railway Magazine, page 472

   1 more example

   Authority to construct eight carriages, to test the new design in public service, had already been given; but of course complete working drawings had first to be prepared.

   1964 July, “XP64: New Standard Carriage Project”, in Modern Railways, page 2