Lot 93: Circumfercenter

Estimate: $800 – $1,200
Rare 19th c. boxed “Circumfercenter”, used in surveying, rectangular walnut box with poplar bottom, fitted for the brass circular instrument, signed “Henry Wadsworth, Duxbury, Mass.”, with pat. dated “Aug 21, 1877”, marked with degrees and compass keys, interior fitted with original “T” square, 21 1/2″ l, 13″ w, brass 6 1/4″ dia.