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 205
the ray drawn from H the centre of the front arch^ willbe the centres for drawling the other arches; R being the centrefor describing the front of the first rib. 7th. The joints in the fronts of the projecting ribs radiate to theirrespective centres, and the joints in the soffit of the arch… … w^-mni plate xlviii. 99 Figure 2. To draw Semicircular or Pointed Arcades on either side of thespectator^ running parallel to the middle visual ray, N. P andQ. O the width of the arches being given^ and P. Q the space be-ticeen them, 1st. From JV, P. Q and 0 erect perpendiculars; make them all…
