AN AMERICAN SURVEYOR'S COMPASS
LATE 18TH CENTURY
The wooden body of the circumferentor with trough compass and graduated brass scale 0-90°-0 for alidade that screws to side when not in use.
11½in. (29cm.) wide
AN AMERICAN SURVEYOR'S COMPASS
LATE 18TH CENTURY
The wooden body of the circumferentor with trough compass and graduated brass scale 0-90°-0 for alidade that screws to side when not in use.
11½in. (29cm.) wide
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