~GOOD TWO INCH, FOUR DRAW MAHOGANY REFRACTOR-RARE SIGNATURE~

~GOOD TWO INCH, FOUR DRAW MAHOGANY REFRACTOR-RARE SIGNATURE~

350 GBP ($495 USD) + postage

A GOOD TWO INCH MAHOGANY BARRELLED, FOUR DRAW TELESCOPE BY JONES & SON C.1800

Dimensions

42 x 2 inches in diameter

Circa

1800

Maker

Jones & Son

Country of manufacture

UK and Ireland

Categories: Telescopes - Refracting, Patent & Salesmans Samples, Office Antiques, Engineering antiques, Navigational instruments

Description

A good two inch diameter, FOUR draw mahogany barrelled, refracting hand held telescope with a rare and early signature. Manufactured by John Jones and his two sons ( William and Samuel of later renown), it is signed “Jones and Son Fecerunt, Holborn London” and is the only extant example I can find with this signature when the elder son came into the business at their new address on Holborn Street.

Perfect optics (although there is a lens chip outside of the optical plane) with an estimated magnification of 20X. The barrel has two old shrinkage (stress) fractures that have been glued and stabilized. There are two pins missing from the object lens collar but everything is nice and tight (as are the four draws with optical alignment arrows). The machining is early and magnificent with very few knocks. The draws are dent free. The ocular lens is a doublet and retains it’s protective sliding shield. All in all, a rare bird. 42 inches extended, 11 inches collapsed. The object lens is of the typical green, crown glass and is an optical doublet as well. No lens cap.

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CA ScientificaOpticae

Scientifica Opticae

Mark Hacking (Scientifica Opticae Inc.) has been an avid collector/dealer for over 30 years. A former Science teacher, he has an innate love for anything natural or mechanical. Specializing in optical (microscopes, telescopes), surveying, medical, weighing and drawing instruments, he is an active participant of the Scientific Instrument Fair in London. Living in Stratford, Ontario, Canada, with his wife and two children; Mark looks forward to meeting as many fellow collectors as possible, and has a worldwide following on eBay (Sciopti).

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