Portable horizontal sundial in wooden case with th

1824 in London

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Portable horizontal sundial in wooden case with the gnomon mounted on a floating compass card. "Porter's magnetic sundial on the floating compass card, Saml Porter, fecit Feb 16 in 1824, Entered at Stationer's Hall" printed on the inside of the lid


Time Measurement
Object Number:
magnetic horizontal sundial
Harley, G.

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