Objects
Chizhov Nikolai. Cross-functional equatorial sundial, mid 18th c.
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Chizhov Nikolai. Cross-functional equatorial sundial, mid 18th c.
Number
МАЭ № 7717-2. МЛ-280
Title
Cross-functional equatorial sundial
Date
mid 18th c.
Author
Chizhov Nikolai
Material
brass
Dimensions
diameter 19.2
Annotation
Hour scale III-ХII-IX with 2-minute devision. Latitude scale 10°-90° with 1/2° devisions and numbering in 10. Two-layer compass scale: on the bottom is 4-rhumb wind rose with additional 8-rhum marking, on the projection is 0-90-0-90-(0) grade scale with devisions in 1° and numbering in 10. List of 15 Russian cities with thier latitudes with 1-minute accuracy is on the base, around the compass. Inscription on holder: “d. Nikolai Chizhov in Sanktpeterburg" (made by Nikolai Chizhov in St. Petersburg).
Corpus
History of Science Monuments. 14th-19th centuries. Mikhail Lomonosov Museum
Albums
Mikhail Lomonosov and Russian Science of the 18th Century