Gunner's quadrant

This gunner's quadrant is used to help determine the elevation of a gun barrel. It is fitted with a spirit level and the scale is marked to 90 degrees.
Vernier reads to 5'.
Spirit bubble level.
Identical to Q.14.
Fitted mahogany box.
Scale reads from 0-90 in half degrees.

Object Details

ID: NAV1048
Collection: Astronomical and navigational instruments
Type: Gunner's quadrant
Display location: Not on display
Creator: Adams, George
Date made: circa 1770
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 18 x 470 x 174 mm
Parts: Gunner's quadrant
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