Johnston, Philip Devereux, 1855- · New York, D. Williams Company · leaf 78
radius C d draw d f; from B with radius B /draw / i; from A with radius A i draw i e; from C withradius C e draw e g, and from B with radius B g drawg h. The centres A, B and C are not necessarily ar-ranged in the form of an equilateral triangle; their po-sitions will be determined by the… … F/G 2S
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-9-15.webp)
