拍品 151
151
An 18th Century brass octagonal sundial signed Johan Schrettegger in Augsburg, the compass with silvered dial, blued steel needle on jewelled pivot, the folding latitude arc engraved 10°-90°, the equinoctial with engraved hour ring and folding gnomon

细节
An 18th Century brass octagonal sundial signed Johan Schrettegger in Augsburg, the compass with silvered dial, blued steel needle on jewelled pivot, the folding latitude arc engraved 10°-90°, the equinoctial with engraved hour ring and folding gnomon