Horizontal Magnetic Dial, by Samuel Porter, English, c. 1825

Inventory Number 36476

Acknowledgement: © History of Science Museum, University of Oxford, inv.36476

Subject: Sundials; Mathematical instruments
Item type: Object
Makers: Samuel Porter
Provenance: From the collection of Lewis Evans.
Primary inscriptions: "S. Porter Fecit" on the card. Label inside lid "Patronized by the, / KING / PORTER'S MAGNETIC / SUN DIAL" and "Floating on an Agate Cap"
Physical material: Wood; brass; glass; paper
Object type: Magnetic dial
Dimensions: Diameter: 55mm
Inventory No: 36476
Accession Number: 1924-0/part

Floating compass card and dial plate with glass dome and turned wooden case.