Universal Equinoctial Sundial by Henry Winne
name: label: maker
content: Henry Winne
notes: label: Description
content: This brass universal equinoctial ring dial consists of a meridian ring, hour ring, rotating crosspiece or bridge, and sliding handle with suspension ring. The meridian ring is calibrated from 0 to 90 by degree on one side (for solar altitude) and from 0 to 90 x 2 by degree on the opposite side (for northern altitudes). There is a fleur de lis at each 5-degree mark. The hour ring is calibrated from I to XII x 2 by I on one side. There is a set of three dots at each 15- and 45-minute mark and a fleur de lis at each half-hour. The divisions continue onto the inner edge of the hour ring. There is some decoration at each end of the bridge. The bridge contains a pinhole gnomon which slides along a calendar scale calibrated and lettered by month on one side. The opposite side contains the maker's mark and a declination scale calibrated from 20 to 0 to 20. Ten units on this scale measure 1.5 cm. Both sides of the meridian ring and the opposite side of the hour ring are engraved with a list of twenty-one European cities and Constantinople with latitudes. Twelve of the cities are in England.
label: Description
content: Henry Winne (or Wynne) was a well-known London instrument maker of the second half of the 17th century who sold to Gregory, Flamsteed, and Hooke.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London
topic: label: Subject
content: Mathematics
label: Subject
content: Timekeeping
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1987.0851.01
label: catalog number
content: MA*326974
label: catalog number
content: 326974
label: accession number
content: 1987.0851
objectType: label: Object Name
content: sundial, equinoctial
physicalDescription: label: Measurements
content: overall: .7 cm x 19.5 cm x 24 cm; 9/32 in x 7 11/16 in x 9 7/16 in