The sheet-metal worker's guide : a practical handbook for tinsmiths, coppersmiths, zincworkers, etc., comprising numerous geometrical diagrams and working patterns, with descriptive text (1888)
Crane, W. J. E. (W. J. Eden) · London : Lockwood and Son · leaf 55
43 ANGLES. and the same radius, describe ttie arc 4, 6, cutti7ig (or crossing) the first arc at 6 and 7. Lastly, through the points 6 and 7 draw the right (or straight) 2 line shown, and this will bisect the line AB in the point 8, and be perpen- ^ dicular to the line A B. From a given point, as c… … rig. 35. is centre and the describe the arc 3, 4 ; with 2 Join this point 5 same radius, cut this arc at 5.
Sheet-metal work
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
