FRENCH THREE-DRAW TELESCOPE OF UNUSUAL PATENTED CONSTRUCTION

FRENCH THREE-DRAW TELESCOPE OF UNUSUAL PATENTED CONSTRUCTION

Stock Number: 9147

$950.

For sale an antique brass and leather-covered three draw telescope by rarely found Parisian makers

Dimensions

7

Circa

C. 1860

Country of manufacture

France

Categories: Maritime, Scientific, Telescopes, Navigational instruments, Telescopes - Refracting

Description

FRENCH THREE-DRAW TELESCOPE OF UNUSUAL PATENTED CONSTRUCTION, c. 1860, signed “Léon Desbordes & Amédée Lipman, rue des Filles de Calvaire, 14, Paris.” and “Breveté, S.G.du G’t.”  This achromatic telescope opens from 7” to 13” (18 – 33 cm) by eye drawtube plus two short central drawtubes.  It is a quick-opening, stable system allowing focus by the first tube.  The two outer “fixed” tubes are tapered, bound in leather, and fitted with carrying rings.  No case is required.  Fine erect images are given by the 1-5/8” diameter achromatic objective and eyepiece system.  There is an eye shutter and partial dust cap.  It is an unusual construction, in very fine condition.

The Parisian makers, Desbordes and Lipman, are credited with various patented mechanical inventions, but are rarely encountered in the marketplace. $950.

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US TESSERACT

David and Yola Coffeen both have enjoyed academic careers, as planetary astronomer and as linguist/educator. But since 1982 (yes, 1982!) they have been full-time dealers in early scientific and medical instruments, under the name Tesseract. Selling primarily by catalogue (over 100 issued so far) they also have a web presence at www.etesseract.com, and can be contacted at mail@etesseract.com.

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