This compass has a wooden bowl and a paper card with an ornate American
eagle with a ribband in its mouth reading "E PLURIBUS
UNUM" at north. This card was probably made for William Davenport.
It was later used by his successor, William Helffricht. The overlaid signature is that of Aaron Breed (1791-1861) of Boston, who established an instrument shop at 166 Broad Street around 1840.
Ref: "Aaron Breed," in Annals of the Massachusetts Charitable Mechanics Association (1861): 41.
