Augsburg-type sundial with case
Datecirca 1790
Inventory Number7099
ClassificationSundial
Subject
Maker
Andreas Vogler
c. 1730 - 1800
Cultural Region
Place of Origin
Dimensions1.4 × 5.2 × 5 cm (9/16 × 2 1/16 × 1 15/16 in.)
Material
Accessoriescase
DescriptionThis octagonal, brass sundial is engraved with a geometric sun shape on the dial plate surrounding the compass.
The compass is silvered and divided into four sections with an eight-pointed wind rose in the center. The abbreviations for each of the cardinal directions are engraved in their corresponding quadrants. There is an arrow for magnetic declination at approximately 15° west, marked with an “S” at the arrow end and an “M” at the feathered end. The compass needle is blued and arrow shaped.
The equatorial ring of this sundial is circular, with an engraved hour scale on the top surface. The hour scale is marked with Roman numerals III-XII-IX and is divided into half-hour intervals. The inner surface of the ring is marked with lines to indicate half-hour divisions. The sundial's gnomon is a pin mounted to the center of a rotating bar that bridges the 6 o'clock hours.
The latitude arm is marked from 8° to 84° every 10°, and further divided into 2° increments.
The underside of the compass box is engraved with a gazetteer of 7 European towns and their latitudes, along with the signature of the maker.
This sundial has a fitted, octagonal, leather and paper case.
The compass is silvered and divided into four sections with an eight-pointed wind rose in the center. The abbreviations for each of the cardinal directions are engraved in their corresponding quadrants. There is an arrow for magnetic declination at approximately 15° west, marked with an “S” at the arrow end and an “M” at the feathered end. The compass needle is blued and arrow shaped.
The equatorial ring of this sundial is circular, with an engraved hour scale on the top surface. The hour scale is marked with Roman numerals III-XII-IX and is divided into half-hour intervals. The inner surface of the ring is marked with lines to indicate half-hour divisions. The sundial's gnomon is a pin mounted to the center of a rotating bar that bridges the 6 o'clock hours.
The latitude arm is marked from 8° to 84° every 10°, and further divided into 2° increments.
The underside of the compass box is engraved with a gazetteer of 7 European towns and their latitudes, along with the signature of the maker.
This sundial has a fitted, octagonal, leather and paper case.
Signedon underside of compass bowl: And. Vogl
FunctionTime-finding by orienting the gnomon to point toward the North Pole with the aid of a magnetic compass and an angular adjustment for latitiude.
ProvenanceHarrold E. Gillingham, Philadelphia, Pennsylvania, purchased in 1922. David Wheatland purchased from Gillingham, 1949. Donated to CHSI 1985.
Andreas Vogler
Date: circa 1790
Accessories: case
Object number: HO81Z-3
Johann Nepomuk Schrettegger
Date: circa 1800
Accessories: case
Object number: 7092