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16th cent.
Paper codex, 4°, ff. 114; 24,7x18,3 cm
Florence, Biblioteca Riccardiana, Ed. Rare 120, ff. 95-114
Facsimile
Maybe the work of a military engineer or a commander, this leaflet illustrates the operations of the compasses II.1.9. Two different functions of the instrument are described on folios 97v-98r: measuring time and leveling fields.