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 53
person using it to place it, so that the centre, orintersection of the cross lines, may coincide with any given point on theplan. If the instrument is in correct order, a line connecting the finepricking points with each other would pass through the centre of the in-strument, as denoted by the… … ris. 76. jdaccd (III ilic j)a]KM-, ho that tlio two fine steel points may be on tlie givenline (from wliciicc olluT and aiiguhir lines are to be drawn), and the centreolllic in>jruincnt coincides willi llic given angular point on such lino. Tliisdone, ])rcss llic ]>n»lnict(>r gently down,…
