Caitlin at Geo Lounge on pantographs: “Before the use of computers to replicate and manipulate maps, a pantograph was one of the ways used to either reduce or enlarge the size of a map while reproducing an accurate copy of the original map.” I did not know about pantographs—they seem to have been widely used in drawing and diagramming. Maps too, it would seem.

Author: Jonathan Crowe

Jonathan Crowe blogs about maps at The Map Room. His essays and reviews have been published by AE, Calafia, The New York Review of Science Fiction, the Ottawa Citizen, Strange Horizons and He lives in Shawville, Quebec.