A text-book of geometrical drawing, for the use of mechanics and schools, in which the definitions and rules of geometry are familiarly explained .. (1850)
Minifie, William, 1805-1880. [from old catalog] · Baltimore, W. Minifie & co. · leaf 54
rally found on the plane scale which accom-panies a set of drawing instruments, and marked C, or Ch, Note 2.—Any scale of chords may be reconstructed by using the chord of60° as a radius for describing the quadrant. Application.—-Problem 31. Fig. 2. To lay down an Angle at F, of any number of… … i : 1 1 1 1 1 1 1 iLIU 11 1 IMI p so 6\0 -\o 6 O \0 d\o 31^ 2\0 i> 1 F Fu/. 2.
