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Description: | This is a small Galilean telescope made of turned wood. The eyepiece cap unscrews to reveal a small sundial. The gnomon (the indicator that casts the shadow) is set for 48 degrees north, the latitude of Paris. The telescope can also be unscrewed, allowing the objective end to be used as a simple microscope.
Multi-purpose instruments like this were often made around the turn of the 18th century.
AUDIT - item needs marking with its identity number. Four unnumbered part.Focal length;-". O.G. diameter; 0.5".Sundial gnomon set for latitude 48(Paris).
caption: Spyglass telescope | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Galilean telescopes Galilean telescope | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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