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 51
of the larger one, Avhich are made hollow for their reception. … DRAWING INSTRTTMENTS. 31 It may easily be seen from the engraving, that by reversing either ofthe jDoints in the principal instrument, it may be sn2)plied with a pen orpencil as may be required, leaving the other fine or plain point E or D toact as a centre. Mr. Brunei has introduced what are…
