Brass reflective protractor, after Howard Douglas, unsigned, - Lot 399

Lot n° 399
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Estimation :
200 - 300 EUR
Brass reflective protractor, after Howard Douglas, unsigned, - Lot 399
Brass reflective protractor, after Howard Douglas, unsigned, England, circa 1830. Brass and glass; 20.5x10.5 cm. Instrument used as a marine sextant.
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