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Hotel Nogalhilton Geneve, Nov 11, 2001

LOT 210

T. Launders, Mathematical and Optical Instrument Maker, 35 College Green, Dublin, circa 1820.Fine, brass horizontal pantograph in original mahogany box used in Breguet shop.

CHF 3,000 - 4,000

USD 1,800 - 2,500

Sold: CHF 87,100

C. Parallelogram type, two pivoted leading arms, the base arm with a calibrated slot and adjustable socket holder for the stylus, the leading arm with a socket for the pointer, adjustable brass ratio thumbscrews, brass lead holder attachment and brass tracer point, four legs with ivory wheels, separate arm pivot on a heavy circular base covered in green fabric.Signed on paper label inside the front cover of the box.Dim. 46 mm.Good overall condition, worn in pivotal points.


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Grading System
Grade: AA

Very good

Notes

This is the instrument Professor Engel bought from George Brown, the owner of Breguet. It is said to have been used in Breguet's shop for engraving secret signatures.The pantograph is a precision instrument used for reduction or enlargement. It was invented about 1610 by German Jesuit Christopher Scheiner (1575-1650), who used it for making optical copies.