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Ships within 48 hours · Estimated delivery Nov 14 - Nov 19
Weight: 4 lbs
An electrostatic generator that develops high voltage
center pin gnomon
Dimensions: 8
and early example
Early 'Heliochron' Pantochronometer trial frame Weight: 4 lbsA 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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