drawing, as of machinery, done with the aid of rulers, scales, compasses, etc.
Origin of mechanical drawing
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a drawing to scale of a machine, machine component, architectural plan, etc, from which dimensions can be taken for manufacture
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012