diagraph

American

[dahy-uh-graf, -grahf] / ˈdaɪ əˌgræf, -ˌgrɑf /

noun

a device for drawing, used in reproducing outlines, plans, etc., mechanically on any desired scale.
a combined protractor and scale.

diagraph British

/ -ˌɡræf, ˈdaɪəˌɡrɑːf /

noun

a device for enlarging or reducing maps, plans, etc
a protractor and scale used in drawing

"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

Etymology

Origin of diagraph

1840–50; < French diagraphe < Greek diagráphein to draw. See dia-, -graph

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023