AN ENGLISH CIRCUMFERENTOR
HENRY EDGWORTH, CIRCA 1780
the brass alidade with vernier for scale 0-360°, the glazed compass with another brass degree scale and a printed 32-point rose with 0-90°-0-90° signed H EDGWORTH MAKER BRISTOL
7in. (18cm.) dimater
AN ENGLISH CIRCUMFERENTOR
HENRY EDGWORTH, CIRCA 1780
the brass alidade with vernier for scale 0-360°, the glazed compass with another brass degree scale and a printed 32-point rose with 0-90°-0-90° signed H EDGWORTH MAKER BRISTOL
7in. (18cm.) dimater