Brass nocturnal engraved of 12 months with « Facies oculo applicanda » at the back, and « Ratio stÿli novi ».

On the arm, you have a reference to the Gregorian calendar (after 1583).

Probably from South Germany (catholic).

Dimensions : 10 cm total long / 5,5 cm diameter

Similar exemplar in the book "Instituto E Museo Di Storia Della Scienza Firenze Catalogue of Sun-dials, Nocturnals and Related Instruments" n° 102 pages 134 and 135, and n° 108 pages 142 and 143.

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Also discover many more astrolabes and nocturnals in the dedicated section of our French website : « Astrolabes et nocturlabes ».