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NORTH AFRICAN, 19TH CENTURY
细节
A BRASS MAGHRIBI QUADRANT
NORTH AFRICAN, 19TH CENTURY
unsigned and undated with astrolabic projection to the obverse, two pin holes sights, the reverse with sexagesimal trigonometric grid, in leather and marbled paper bound wooden case
5¾in. (14.5cm.) radius
NORTH AFRICAN, 19TH CENTURY
unsigned and undated with astrolabic projection to the obverse, two pin holes sights, the reverse with sexagesimal trigonometric grid, in leather and marbled paper bound wooden case
5¾in. (14.5cm.) radius