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LEONARD DIGGES (C.1520-c.1559) AND THOMAS DIGGES (C.1545-1595)
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LEONARD DIGGES (C.1520-c.1559) AND THOMAS DIGGES (C.1545-1595)

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LEONARD DIGGES (C.1520-c.1559) AND THOMAS DIGGES (C.1545-1595)
A Geometrical Practical Treatize named Pantometria, divided into three Bookes, Longimetra, Planimetra, and Stereometria. London: Abel Jeffes, 1591. 4° (275 x 185mm). Numerous woodcut illustrations and diagrams throughout, with the errata leaf. (Without front blank, title with small loss in outer margin and adhesive offstting from bookplate on verso, very few leaves with faint marginal dampstain, D1 with some loss in outer margin, remains of sealing wax at two places in the margin of the dedication leaf, errata leaf soiled and with marginal tears with small loss.) 17th-century panelled sheep, later label on spine, edges sprinkled red (small expert repairs at spine ends and board edges). Provenance: John Harrison (18th-century gift inscription on title) -- Thomas Bowater Vernon (bookplate, obscuring an earlier bookplate).

Second and best edition of this important Elizabethan work of practical geometry, CONTAINING THE FIRST DESCRIPTION AND ILLUSTRATION OF THE THEODOLITE, which Leonard Digges invented, AND A DESCRIPTION OF 'PERSPECTIVE GLASSES' ANTICIPATING THE INVENTION OF THE TELESCOPE: 'here, for the first time, we have indications of an instrument which we may call a reflecting telescope' (King, The History of the Telescope, p.29). The first three books consider surveying, measuring and gauging, and are followed by Thomas Digges's treatise on ballistics which disproved many commonly held erroneous ideas; 'these appendixes constitute THE FIRST SERIOUS BALLISTICS STUDIES IN ENGLAND' (King). STC 6859; Taylor, Tudor and Stuart 42.
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