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Translation

[Heading of the Plate:] Tertium torni genus, subtilitate non carens, ad insculpendam pedetentim cochleam cuiusuis formae, in ambitum cuiuscunque figurae rotundae et solidae, vel etiam ovalis [Heading from Besson 1572:] Une tierce espece de tour en nulle part encore veüe et qui n'est sans subtilité, pour engraver petit à petit la viz à l'entour, de toute figure ronde et solide voire mesmes ovale.

A third kind of lathe, not without its subtlety, for carving little by little the inside of the spiral in any form around any round figure which is solid, or also oval, and in the shape of a cone. [Besson 1971, 191]