English c.1840, engraved 'James Gargory' (w 1835-1862), of unusual form with a folding arm with small sliding steel locking pin, index arm with spirit level, arc engraved with elevation scale 0-90, in original mahogany case case 9.8cm wide
Sold for £688
Result plus buyers premium
English c.1840, engraved 'James Gargory' (w 1835-1862), of unusual form with a folding arm with small sliding steel locking pin, index arm with spirit level, arc engraved with elevation scale 0-90, in original mahogany case case 9.8cm wide
Auction: Science, Medicine & Early Technology, 1st May, 2024