A Dutch mapping instrument
L.J. Harri, Amsterdam; circa 1900
A brass disc divided 0°-360° with central spring-loaded pin, fitted into wooden stands in its case -- another wooden case houses a two glass discs, and a brass fitting with four extentable arms with vernier scales, maker's label to case.
15in. (38.5cm.) wide in case (2)
A Dutch mapping instrument
L.J. Harri, Amsterdam; circa 1900
A brass disc divided 0°-360° with central spring-loaded pin, fitted into wooden stands in its case -- another wooden case houses a two glass discs, and a brass fitting with four extentable arms with vernier scales, maker's label to case.
15in. (38.5cm.) wide in case (2)
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