"Quadrant In Mahogany And Brass Datable From The 18th Century"
Quadrant in mahogany and brass.On the upper side there is a brass circle graduated from 0 to 90 twice, divided every 10 degrees and subdivided into degrees.
At the top a small brass system for hanging a ring is screwed.
On one side, two aiming pinnules each pierced with a hole.
The back not engraved.
Dimensions: 8 '' radius x 28.5cm width x 1.1cm thickness.
England dating from the 18th century.
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