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Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)

Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 141

An illustration from Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor, 1866, leaf 141
roximately by a number of gores. Let CAB(fig. 189) be the eighth of a hemisphere ; on C D describe the quartercircle D A {?; divide the arc into any number of equal parts, six for in- 104 THE DEVELOPMENT OF SURFACES. stance; from the points of division 1, 2, 3,... let fall perpendiculars onC D, and… … Fig. 190. Fig. 1S9. sions ; then from either side of this line lay off V 1, 2 2 .... D B equal to the arcs 1 1, 2 2, D B (fig. 189). Connect the points C\ V% 2\ .... and C A B is the developed surface. It is to be remarked, that in the preceding demonstrations, the forms aredescribed to cover the…

Mechanical drawing · Architectural drawing · Projection · Perspective

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