Details
An 18th-Century French brass sector,
signed Bethier a Paris, engraved with various scales, one side recalibrated and stamped for inch measurement -- 12 7/8in. (32.7cm.) long opened
signed Bethier a Paris, engraved with various scales, one side recalibrated and stamped for inch measurement -- 12 7/8in. (32.7cm.) long opened