An attractive example in black-stained ivory.
Condition: optically fine with original lens focussing on the specimen pin. The livebox lens below is also undamaged. The ivory top has three cracks in it,and the base has a circular crack (see photos). All screw threads are good.
Ask the Dealer
Ganymede Antiques, established in 1992, is based in Muswell Hill, London, U.K. We specialise in scientific instruments from the 18th and early 19th centuries, with particular interest in sundials, and drawing and calculating instruments. We are always keen to buy interesting instruments, and entire collections. We exhibit at the twice yearly International Antique Scientific Instrument Fair in London. Keith Petts can be contacted at firstname.lastname@example.org