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Both included in their original wood cases
Dimensions: 8
The tapered ends are for ease of holding
Featuring a wooden lunar volvelle and equatorial sun and moon dial
center pin gnomon
Early 'Heliochron' Pantochronometer trial frame Both included in their originalA Rare early 19th century Pantochronometer hand engraved 'HELIOCHRON' on lid. Complete original. Dome cased brass sundial compass with floating paper face and fixed brass gnomon. Pantochronometers were first developed in the late 1700's, and widely popularized in 1820 by Samuel Porter. A fine, functional, scarce, and early example. Circa 1830. Diameter: 4. 5 cm. Height: 3 cm. Weight: 1. 7 oz.
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