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 186
he plate A is fastened to the foundation itself, and the upper surface isplaced perfectly level in both directions. On these bearing surfaces aaathe body of the standard rests, and can be adjusted in position horizontally,and then clamped by screws to the foundation-plate, or keyed at the ends.Fig.… … Fis. 5. h....J .<? 11/, I . V _- ^f- - V :::::;:L^ V^ ---1. - .y..^. ij.K t
