Description

The lower row from left to right shows: north-east view of the exterior

but you must really be more careful - here's a nice plaister for you'

22nd August 1983

Walsall Market

Allan Harris of QPR

Astronomical quadrant Size:XL: 100 x 75cm The lower row from leftA 12 inch astronomical quadrant made by John Bird. Astronomical quadrants were used to measure the angle of a celestial object from the zenith. Operated in conjunction with a transit instrument, they could be used to check the running rate of astronomical clocks known as regulators. At sea a quadrant can be used to help fix a ship's position and to determine latitude. ca. 1767

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