Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 91
f the paper will form the helix, and the pitch is the heightreached in going once round. This helix is sometimes describedas an inclined plane wrapped round a cylinder, which is practic-ally what this experiment shows. Now, as in travelling up aninclined plane one continues rising at a regular…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
