Anthony, Gardner Chace, 1856- [from old catalog], Ashley, George Francis, [from old catalog] joint author · Boston, D. C. Heath & co. · leaf 166
problem, 2^ x 3 inches. Angles between GL and traces of p| A-fC 1Qplanes, multiples of 15°. Measurements from GL, in light type, and from right-hand division line, in heavy type. »-A It. 1 O \l4 2 \8 4 ^-^ ^^ J^^ 7 6 12/ 6 12/^ ^ 78 . 8 /16/ / ^y^ ^^ S 9 vs . 10 11 I^S , 12 HS ^^ c * 0 //S ^ 1… … rp-
Geometry, Descriptive
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