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Davis quadrant, probably English

Davis quadrant

INSTRUMENTS - QUADRANTS
French, James
England
1788
25 x 14 in.

Davis quadrant, or backstaff, made of hardwood. Plaque on front arm "James French 1788" [owner?]. The 60° arc has a scale for correcting for the sun’s semi-diameter, therefore very probably English manufacture. All parts are original.


1954.1202