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helicograph

[hel-i-koh-graf, -grahf]
noun
  1. an instrument for drawing helices.
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Origin of helicograph

First recorded in 1850–55; helico- + -graph
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for helicograph

helicograph

noun
  1. an instrument for drawing spiral curves
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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