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History of Science Museum

Mechanical Equinoctial Dial, by Johann Willebrand, Augsburg, c. 1715

Inventory Number 34585


Acknowledgement: © History of Science Museum, University of Oxford, inv.34585

Item type
Object
Provenance
Presented by Lewis Evans
Primary inscriptions
"Johann Willebrand, in Augspurg."
Physical material
Gilt and silvered brass
Object type
Equinoctial dial
Dimensions
Height: 170mm Width: 164mm Depth: 134mm Weight: 1.35kg
Inventory No
34585
Accession Number
1924-0/part

Description

Rectangular base plate with three screw adjustable feet; decorated meridian ring support with plumb bob; meridian ring adjustable for latitude, with hour ring and index with minute dial and geared pointer. Within meridian ring an ecliptic plane with alidade and calendar scale.