Webster Signature Database - Suggest Correction

Signature Maker Instruments Comments Location References
ROIAS, JUAN DE Belgium; France, c.1550, pupil of Gemma Frisius; invented a new projection for the astrolabe; author of "Commentarium in Astrolabium", Lutetia, 1550. Louvain; Paris (1550). Michel 2 & 3; Maddison 1 & 7; Gunther 1; Perry.

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