Picture This XVIII

I’m no Gunter or Oughtred; in fact, I’d be more likely to put two and two together and come up with a ballet skirt. Hence my interest was piqued when I came across this seventeenth-century arithmetical machine in Christie’s upcoming “Travel, Science & Natural History” auction at their rooms in South Kensington, London on the 10th of October 2013.

de_Roven_arithmetical_machine_c1678_01a

An arithmetical machine by Rouen watchmaker Rene Grillet de Roven, circa 1678. (Christie’s)

The 32.5cm x 14.5cm (12.8″ x 5.7″) walnut cased mechanical calculator is one of only three known examples of this design to survive and goes to auction with an estimate of £70,000 to £100,000 ($119,000 to $170,000).

In the same sale, and of interest to those wishing to copy or bigginate drawings and patterns etc., is a wood and brass pantograph by Johan Gustav Hasselstöm.

Hasselstom_pantograph_c1800_01a

Pantograph by Johan Gustav Hasselstöm, circa 1800.

Jack Plane

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About Jack Plane

Formerly from the UK, Jack is a retired antiques dealer and self-taught woodworker, now living in Australia.
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