Altitude Ring Dial - Miniature - Hanging

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Description

Altitude Ring Dial - Miniature - HangingMiniature sundial. Height sundial. From 16th 17th centuries. This dial is a solar altitude clock. It takes ts name because the parameter of its construction is based on the altitude of the Sun. The dial is composed of a circular band perforated by two offsetting symmetrical holes through which the sun rays pass and are projected as a small elongated spot of light on the hourly line etched on the interior of the dial. Crafted of brass comes complete

Measuring the height of a star using the back of the instrument

This model is a sea-going

17th and 18th century

Fashioned of brass with a brass key ring and featuring a compass rose on the reverse

Invented in 1877 by Frenchman Emile Reynaud to overcome the deficiencies of the Zoetrope

an open drum with slots at the top and an image strip placed at this bottom

Augsburg style

this is an excellent executive gift for the history fan in your life

made of bronze

1600 and ends December 31st

known as Pocket Sundial

This nautical compass was used in the 16th century