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Horizontal String-Gnomon Sun and Moondial, by Johann Martin, Augsburg, c. 1700

Inventory Number 35689

Acknowledgement: © History of Science Museum, University of Oxford, inv.35689

Item type
Object
Provenance
From the collection of Lewis Evans.
Primary inscriptions
"Iohann Martin in | Augspurg 48" on underside of compass box at end of latitude list.
Other inscriptions
Written on the inside of the lid of the case is "220 / 12". Written by Lewis Evans on the inside of the base of the case is "199 1/2". Loose inside the case is a typical green Evans tag "399 1/2" as well as a white tag with the final number "G.298".
Dimensions
Width: 62mm Depth: 66mm
Inventory No
35689
Accession Number
1924-0/part

Description

Decorated octagonal base with central compass (needle and glass missing); on a silver ring is the hour scale 4 - 12 - 8 inscribed "Horizontalis Solis & Lunare" and a scale of the age of the moon "ÆT Luna", and inside is the rotating silver hour scale for the moondial; sprung gnomon arm with latitude adjustable cursor numberred 48, 50, 52 (plummet missing and string snapped); three feet; the silvered underside of the compass bowl carries a list of latitudes as well as Martin's signature. With leather covered case.

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