~GOOD 2 3/4 INCH DIAMETER REFLECTING TELESCOPE by JOHN CUTHBERT~(ON HOLD)

~GOOD 2 3/4 INCH DIAMETER REFLECTING TELESCOPE by JOHN CUTHBERT~(ON HOLD)

$1250 US ( 995 GBP, 1100 Euros) + shipping

A 2 3/4" diameter, short screw, 12" barrel, brass reflecting telescope by John Cuthbert, London. First quarter of the 19th century.

Dimensions

15 x 11 x 2 3/4

Circa

1825

Country of manufacture

UK and Ireland

Categories: Engineering antiques, Office Antiques, Telescopes - Reflecting

Description

A very good example of a mid-sized reflecting telescope, in solid brass with the new innovation of the short worm and screw.

Although most of the original lacquer is gone, this telescope has a pleasing patination and unusual dimensions. Signed in diminutive script on the speculum mirror backing plate “John Cuthbert, London”, it stands 11″ tall and is 2 3/4″ in diameter. Overall length is 15″ including the eyepiece although the barrel length is 12″. The worm and screw assembly is just 4 1/4″ inches in length and the cabriolet leg desktop diameter is 7″. Although the long screw models are more attractive, the positive focusing action of the short screw is a far superior design. Optics are clear and magnification is the usual 100-200 x (Sun filter for eyepiece included).There is one tiny dent in the barrel just above the screw assembly but it does not detract. End cap for the barrel and all machined parts show a very early roping of the brass (although this is 1st quarter of the 19th century). A very nice, fully functional instrument by a non-prolific maker. 

 

John Cuthbert (II) apprenticed to Alexander Wellington of Soho, London and has been found to have made microscopes and nautical instruments as well. This instrument dates to 1820.

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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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