Augsburg-type sundial
Datecirca 1790
Inventory Number7097
ClassificationSundial
Subject
Maker
Andreas Vogler
c. 1730 - 1800
Cultural Region
Place of Origin
Dimensions1.5 × 6 × 5.8 cm (9/16 × 2 3/8 × 2 5/16 in.)
Material
DescriptionThis octagonal brass dial is engraved with geometric patterns on the dial plate.
The compass is silvered and divided into four sections, with a sixteen-point wind rose at the center. The abbreviations for 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 needle is a thin arrow.
The equatorial ring of this sundial is circular, with an hour scale engraved on the top surface. The hour scale is marked with Roman numerals III-XII-IX. At the midnight position of the ring, there is decorative scrollwork. The hour scale is divided into half-hour increments, with lines on the inner surface of the ring for the same purpose. 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 4° to 86°, in 10° increments which are further divided in 2° increments
The underside of the compass box is engraved with a gazetteer of 7 European cities and their latitudes, along with the signature of the maker.
The compass is silvered and divided into four sections, with a sixteen-point wind rose at the center. The abbreviations for 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 needle is a thin arrow.
The equatorial ring of this sundial is circular, with an hour scale engraved on the top surface. The hour scale is marked with Roman numerals III-XII-IX. At the midnight position of the ring, there is decorative scrollwork. The hour scale is divided into half-hour increments, with lines on the inner surface of the ring for the same purpose. 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 4° to 86°, in 10° increments which are further divided in 2° increments
The underside of the compass box is engraved with a gazetteer of 7 European cities and their latitudes, along with the signature of the maker.
Signedon underside of compass bowl: And. Vogler
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 from Middegaels, Paris, 1923. David Wheatland purchased from Gillingham, 1949. Donated to CHSI 1985.
Andreas Vogler
Date: circa 1790
Accessories: case
Object number: HO81Z-3
Ludovicus Theodatus Müller
Date: circa 1760
Accessories: case
Object number: 7077
Johann Nepomuk Schrettegger
Date: circa 1800
Accessories: case
Object number: 7087
Lorenz Grassl
Date: circa 1780
Accessories: case
Object number: HO81Z-2