universal equatorial sundial
Datedate 1688
Inventory Number7068
ClassificationSundial
Subject
Maker
Jacobus Lusberg
Cultural Region
Place of Origin
Place of Use
DimensionsOverall: 0.6 lb., 6.3 x 1.2 x 7.8 cm (0.3 kg, 2 1/2 x 1/2 x 3 1/16 in.)
Overall - Storage: 3 x 7.2 x 8.7 cm (1 3/16 x 2 13/16 x 3 7/16 in.)
Overall - Storage: 3 x 7.2 x 8.7 cm (1 3/16 x 2 13/16 x 3 7/16 in.)
Material
AccessoriesOval green sharkskin fitted case and seperate plummet.
DescriptionEquinoctial dial with a continuous circular chapter ring marked II-XII, I-X, subdivided in 1/4 hour increments. A second set of hour markings using Arabic numbers is located on the edge of the chapter ring. The vertical angle of the chapter ring is adjustable for northern latitudes from 11° to 90°, calibrated in 1° increments. The compass rose is divided into 4 points marked: "TR", "LE", "ME", and "PO" with a magnetic declination line offset approximately 10° to the west of North. Latitiudes in degrees and minutes for 48 European towns are engraved on the base.,oval,The gnomon design is unusual. There is a detachable plummet.
SignedSigned "Jacobus Lusberg" / " Faciebat Romae 1688 "
Curatorial RemarksAppraisal by Brieux, 9/24/84: $6000.
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.
ProvenanceDavid Wheatland purchased in France, 1952, via Ernst Weil (#28). Donated to CHSI 1985.
G. Winckler
Date: 1790
Accessories: Leather covered rectangular case and 4 leveling screws. Paper with calculations in pencil and printed "KUNSTAUKTIONSHAUS Math. Lempertz ...Koln " loose in case.
Object number: 7106
George Dollond (I)
Date: circa 1830
Accessories: Mahogany box with fitted interior and two exterior brass hooks and two brass hinges.
Object number: 7056
Thér Barrelet
Date: date 1793
Accessories: None. Plumb bob is missing.
Object number: 7114
Al. Zimmerman
Date: circa 1840
Accessories: Original wood and brown leather case.
Object number: 7487
Pierre Le Maire II
Date: 1730-1760
Accessories: Shagreen fitted case with green velvet lining , exterior decorated with nails.
Object number: 7065
English
Date: circa 1770
Accessories: Fitted red leather case with red cloth interior.
Object number: 7119
Japanese
Date: 1900
Accessories: Built into wooden case with seperate cover.
Object number: 7866