1From George Washington to Carter Burwell, 20 April 1755 (Washington Papers)
...lost at the same time a very valuable, and uncommon Circumferentor .... A circumferentor, or...
2To Alexander Hamilton from James Wilkinson, 6 September 1799 (Hamilton Papers)
...’s chain, 3 cases mathematical instruments, 1 sextant and circumferentor” (
3Memorandum Books, 1805 (Jefferson Papers)
...him was what would be called today a circumferentor; it was eight inches in diameter and...
4To Thomas Jefferson from Isaac Briggs, 31 October 1805 (Jefferson Papers)
...capable of ascertaining a course by the Circumferentor and of running and measuring a straight...
5Thomas Jefferson to John Wood, 1 April 1816 (Jefferson Papers)
and will a Circumferentor with a graduated rim, a fixed, and a moveable......circumferentor is a...
6John Wood to Thomas Jefferson, 6 April 1816 (Jefferson Papers)
A circumferentor would answer the purpose of horizontal angles; but as...
7Thomas Jefferson to Wilson Cary Nicholas, 19 April 1816 (Jefferson Papers)
Circumferentor with cross spirit levels on it’s face, a...
8George Washington’s Professional Surveys (Washington Papers)
...Boundary line bearings were determined with a circumferentor, or plain surveying compass as it...
9Editorial Note: Locating the Federal District (Jefferson Papers)
.... These instruments included a brass circumferentor, a surveying compass made...