Illustrations showing microscopic views of: the point of a needle (Fig. 1); a printed full-stop, original size and magnified (A); the edge of a razor (Fig. 2). Schem. II from Micrographia: or some physiological descriptions of minute bodies made by magnifying glasses with observations and Inquiries thereupon, by Robert Hooke (London, 1665).
Original: copperplate engraving. 1665
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Microscopic views of the point of a needle; printed full-stop; edge of razor appears in: