Extract from Thomas Jefferson to David Rittenhouse

I send for your acceptance some sheets of drawing-paper, which being laid off in squares representing feet, or what you please, saves the necessity of using the rule & dividers in all rectangular draughts & those whose angles have their sines & co-sines in the proportion of any integral numbers. using a black lead pencil, the lines are very visible, and easily effaced with Indian rubber to be used for any other draught

RC (Privately owned). Published in PTJ, 19:584.
Nike KD 11
Author
Thomas Jefferson
Recipient
David Rittenhouse
Date Range
Date
March 19, 1791
Collection
Quotes by and about Thomas Jefferson
Repository
(PAbbott, 1954) Miss Elizabeth Sergeant Abbot, Philadelphia, 1954
Quote Category