~GOOD SINGLE DRAW 2 1/2 INCH TELESCOPE-RARE SIGNATURE~

~GOOD SINGLE DRAW 2 1/2 INCH TELESCOPE-RARE SIGNATURE~

275 GBP ($375 US) + postage

A good single draw, 2 1/2 inch diameter telescope with rare construction and signature

Dimensions

38 1/2 x 2 1/2 inches

Circa

1800

Country of manufacture

UK and Ireland

Categories: Navigational instruments, Engineering antiques, Office Antiques, Telescopes - Refracting

Description

A good. single drawer refracting telescope of 2 1/2 inch diameter, leather covered barrel (repaired). Very unusual construction with a 1 and 1/4 achromatic doublet eyepiece and a 1 and 3/4 inch achromatic doublet OG lens combination. Early green (biconvex) outer glass with a 1/2 inch chip to outer edge (because of the achromatic doublet there is NO image distortion or excess light entrance). Rare, unrecorded signature (Daniel and Jones, Day or Night).  34 1/2 inches long (38 1/2 inches with sun/ray shade tube fully extended) and 20 inches closed. The telescope is not without it’s faults (seam repair with later leather straping and shrinkage cracks) but what a cracker !!!. Perfect, powerful (20-25x) optics with  achromatic doublets on both ends and retaining most of it’s original golden lacquer. Early knurling (roping) of the draws and fitments. All screws present. Protective slide to the eyepiece. c.1800.

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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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