Explanation for an octagonal box, Antoine George Eckhardt, 1777 - 1778 text sheet Text sheet with a Dutch -language explanation of a print with a representation of an octagonal box, drawn on the left using a graphometer and on the right according to the doctrine of the perspective (rules of visional). The text sheet is part of the book: Eckhardt, Description of a general graphometer, 1778. paper letterpress printing

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License: Licensed
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