The Pantagraph
Title: Drawing and Measuring Instruments
Author: John Fry Heather
SeriesEditor: J.F. Heather
Date: 1870
Edition: Enlarged, for the most part entirely re-written
Type: bookSection
Pages: 65-70
Place: London
Series: Mathematical Instruments. Their construction, Adjustment, testing, and use comprising drawing, measuring, optical, surveying, and astronomical instruments
Download: https://content.mpiwg-berlin.mpg.de/mpiwg/online/permanent/vision/pdf/Heather_Pantagraph_1870.pdf
Volume: 1