The illustrated architectural, engineering, & mechanical drawing-book : for the use of schools, students, and artisans ; upwards of 300 illustrations (1856)
Burn, Robert Scott · London : Ward and Lock, 158 Fleet Street · leaf 124
andthrough this draw a line at rightIn the copy take the points/ (where ef intersects thecurve), h and ^ (where the curve hf/ touches or joins to the circles de-scribed from c and d). By means of these points (see the problem in thework on Practical Geometry, to find the centre of a curve, three… … 14. angles to / (/, as//. :3^--
Architectural drawing · Mechanical drawing
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