Foster, Edwin W. [from old catalog] · Garden City, N.Y., Doubleday, Page & company · leaf 132
lipse rep- resents any point, and the string remains the same length. Where itis required to drawan ellipse of definitesize, say two bythree, it becomesnecessary to findthe foci before thestring can be used, Fig. 71. Drawing the ellipse with string and pins and aS it reqilireS considerable skill to…
Carpentry · Woodwork
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