Practical plane and solid geometry for advanced students, including graphic statics, adapted to the requirements of the South Kensington syllabus (1899)
Harrison, Joseph, Baxandall, George Albert · London Macmillan · leaf 298
l traces of AD and AH, and then joining these ;the scale of slope would be at right angles to the joiningline, and could be indexed, since the height of a point A inthe plane is known. In the figure the horizontal trace of AD is not found.We avail ourselves of the fact that a line which inter-sects… … obtained by projecting from d and e on to bmc< and hQa10,and measuring and indexing the level 17. Draw the scale of slope at right angles to e^d^, meetingthe latter in s, and draw hQr parallel to e17dir to meet thescale of slope in r. Then rs, with the indices o and 17, isthe required scale of…
