Educational woodworking for home and school (1908)
Park, Joseph C. (Joseph Charles), b. 1872 · New York, The Macmillan company · leaf 311
Ptj 1,2,3,4 are B ^certres for Compasses. LWith compasses-Approx. Z.With string.-Exact. 3. with trammel Three methods of drawing the ellipse.(Example,4ix6) \cf6=3 T=thumb tach.S-ctrinq Pt*T*T. are the foci (focusei). … H D re*t»on diam.d onblAM.C give* ore
Woodwork (Manual training)
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
