Prophatius astrolabe quadrant

Fitted with sights.
Made for latitude 33 27' (or 38 27') and lat. 30 degrees.
Each side is engraved as a Prophalius astrolabe quadrant, one side for 33 or 38 27' and the other for lat. 30.
Each side of this phrophatius astrolabe quadrant is marked with a prophatius astrolabe projection. This instrument is for telling the time, and is probably the work of an amateur.

Object Details

ID: NAV1060
Collection: Astronomical and navigational instruments
Type: Prophatius astrolabe quadrant
Display location: Display - ROG
Creator: Unknown
Date made: circa 17th century
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 8 x 68 x 70 mm