Equatorial cross functional ring sundial. Equatorial cross functional ring sundial. Chizhov, mid 18th c.

Equatorial cross functional ring sundial
Collection MAE RAS: МЛ-3712
Image ID: 4017375
↑←→↓+--
Museum inventory number:
МЛ-3712
Title:
Equatorial cross functional ring sundial
Author:
Chizhov Nikolai Galaktionovich (?)
Producer:
Instrumental workshops of the Academy of Sciences
Dating:
mid 18th c.
Location:
St. Petersburg city
Materials:
brass
Technics:
casting, engraving
Subject attribute:
Social and humanitarian culture, folk experience, technique. Social and humanitarian culture, folk experience, astronomy and cosmology