|
Date: |
|
Description: | Surveyor's quadrant.
This is a horary quadrant marked with Gunter scales and a surveyors shadow square in the top third. The revolving volvelle on the back of the instrument is a planisphere and shows the constellations near Polaris, the pole star. This was probably a later addition. The plumb line and bob are missing.
Reverse has hours marked I-XII in each semicircle with a volvelle showing the celestial vault.
Location: FH/732/319/a - history of astronomy gallery
caption: Obverse of Gunter quadrant | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | quadrants | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
|
|