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” (
3John Wood to Thomas Jefferson, 6 April 1816 (Jefferson Papers)
A circumferentor would answer the purpose of horizontal angles; but as...
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 Wilson Cary Nicholas, 19 April 1816 (Jefferson Papers)
Circumferentor with cross spirit levels on it’s face, a...
6Thomas 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...
7George Washington’s Professional Surveys (Washington Papers)
...Boundary line bearings were determined with a circumferentor, or plain surveying compass as it...
8Editorial Note: Locating the Federal District (Jefferson Papers)
.... These instruments included a brass circumferentor, a surveying compass made...
9Memorandum Books, 1805 (Jefferson Papers)
...him was what would be called today a circumferentor; it was eight inches in diameter and...