Open image in slideshow, Antique bone miniature binoculars pendant from the beginning of the 20th century.

Antique bone miniature binoculars pendant from the beginning of the 20th century.

$ 2,800.00

Tax included.

Antique bone miniature binoculars pendant from the beginning of the 20th century.

 

 

Souvenir from Basilica de Guadalupe Mexico

 

Size: 2.1 x 2 x 0.9 cm

 

They have two Stanhope lens integrated. If you look closely you can see two image (photo of Virgen de Guadalupe and Basilica de Guadalupe ).

 

 

STANHOPE LENS

 

A Stanhope lens is a simple, one-piece microscope invented by Charles, 3rd Earl Stanhope. It consists of a glass cylinder with each end curved outwards, one more convex than the other. The focal length of the apparatus lies on or within the device so that objects to be studied are placed near or in contact with the less curved end. Because of its simple and inexpensive construction, it was popular in the 19th century. It was useful in medical practice for examining transparent materials such as crystals and fluids.

 

René Dagron modified the lens by keeping one curved end to refract light while sectioning the other end flat and locating it at the focal plane of the curved side. Dagron used the modified Stanhope lens in mounting his microscopic pictures in photographic jewels known as Stanhopes.

 

 

 

 

 

 

Open image in slideshow, Antique bone miniature binoculars pendant from the beginning of the 20th century.
Open image in slideshow, Antique bone miniature binoculars pendant from the beginning of the 20th century.
Open image in slideshow, Antique bone miniature binoculars pendant from the beginning of the 20th century.
Open image in slideshow, Antique bone miniature binoculars pendant from the beginning of the 20th century.
Open image in slideshow, Antique bone miniature binoculars pendant from the beginning of the 20th century.
Open image in slideshow, Antique bone miniature binoculars pendant from the beginning of the 20th century.