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Wollaston protractor

Code: OGANOG0106006

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Wollaston protractor

Code: OGANOG0106006

not available
SAFE PAYMENTS
pagamenti sicuri
For rentals longer than 30 days, the fee is charged. need to contact customer support
Request information
Go to www.dimanoinmano.it to purchase the product
Buy

Wollaston protractor

Features

Age:  18th Century / 1701 - 1800

Origin:  Parigi, France

Main essence:  Walnut

Material:  Steel , Brass

Description

On a circular wooden base a brass disk is placed vertically on which a graduated scale is engraved with the angles from 0 ° to 180 ° twice. Angles are reported every 10 degrees. A vernier allows you to determine intervals of 10 minutes. The protractor, invented by William Hyde Wollaston (1766-1828), allows to measure the angles formed by the faces of a crystal. Thanks to this protractor, even very small crystal angles can be measured. A similar instrument is kept in Pavia at the Museum for the History of the University among the instruments of Alessandro Volta. . The angles are reported every 10 degrees. A vernier allows you to determine intervals of 10 minutes. The protractor, invented by William Hyde Wollaston (1766-1828), allows to measure the angles formed by the faces of a crystal. Thanks to this protractor, even very small crystal angles can be measured. A similar instrument is kept in Pavia at the Museum for the History of the University among the instruments of Alessandro Volta.

Product Condition:
Item in fair condition showing some signs of wear.

Dimensions (cm):
Height: 16
Width: 16
Depth: 16
Diameter: 11

Additional Information

Age: 18th Century / 1701 - 1800

18th Century / 1701 - 1800

Main essence: Walnut

Walnut wood comes from the plant whose botanical name is juglans regia , probably originally from the East but very common in Europe. Light or dark brown in color, it is a hard wood with a beautiful grain, widely used in antique furniture. It was the main essence in Italy throughout the Renaissance and later had a good diffusion in Europe, especially in England, until the advent of mahogany. It was used for solid wood furniture and sometimes carvings and inlays, its only big limitation is that it suffers a lot from woodworm. In France it was widely used more than anything else in the provinces. In the second half of the eighteenth century its use decreased significantly because mahogany and other exotic woods were preferred.

Material:

Steel

Brass

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