Fine late 18th century large graphometer on ebonized stand

Fine late 18th century large graphometer on ebonized stand

Stock Number: FG_22001

£1000

Graphometer or semicircle is a surveying instrument used for angle measurements. It was used by cartographers and hydrographers to measure horizontal and vertical angles, similar to the later theodolite, which evolved from it. The form was introduced in Philippe Danfrie's, Déclaration de l’usage du graphomètre (Paris, 1597). During the 19th-century, graphometers had telescopic rather than open sight alidades, later developed into the theodolite

Circa

1780

Country of manufacture

France

Categories: Scientific, Surveying Instruments & Mining, Drawing Instruments, Calculating, Navigational instruments

Description

The fine unsigned ca. 1780 graphometer offered here is preserved in excellent condition. Whilst flat, the overall height is 33cm, to the top of the arms. Width is 22cm, depth is 19cm. Base diameter 16cm approx.

 

NOTE TO  BUYERS: Until the end of August, I will be staying in Italy (to end a half year’s sabbatical). Previous attempts to ship items to buyers from outside the EU often faced the (in)famous service of the Italian post. Therefore, if you live outside the EU Schengen zone and wish to buy an item listed here, please do, but be aware that shipping will be made to you during the first week of September. Buyers from within the EU will receive their instruments as usual.

I am sorry for this inconvenience,

 

Yuval (Gilgamesh)

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IL Gilgamesh

Gilgamesh was the mythological hero of the cultures of ancient West Asia, who set out on a journey in which he sought youth and eternal life.
Fleaglass Gilgamesh is located in Israel. As an archaeologist researching the material culture of the distant past and using the microscope as a major research tool, for more than two decades I have collected microscopes from the first 300 years of existence of this amazing tool and researched the cultural context of their use. Passion has become an obsession and I cultivate the full and almost unique West Asian collection of historical microscopes. Respectively, I put up for sale surplus or interesting items from the collection. I would be happy to advise any interested collector free of charge. Needless to say, I would love to send photos, information and bibliographic references, and discuss the sale details of the items offered here for sale.

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