A geometrical practise, named Pantometria diuided into three bookes, longimetra, planimetra, and stereometria, containing rules manifolde for mensuration of all lines, superficies and solides: with sundry straunge conclusions both by instrument and without, and also by perspectiue glasses, to set forth the true description or exact plat of an whole region: framed by Leonard Digges gentleman, lately finished by Thomas Digges his sonne. Who hathe also thereunto adioyned a mathematicall treatise of the fiue regulare Platonicall bodies, and their Metamorphosis or transformation into fiue other equilater vniforme solides Geometricall, of his owne inuention, hitherto not mentioned of by any geometricians.

Example.

A Is the place to be measured, B, the marke where I first disposed myne instru∣ment, frō it I go orthogonally to C the index cutting there 400 in the right side of youre square, the distance betweene B and C, I haue supposed 80 pace, where∣fore multiplie 1200 by 80, so there commeth 96000, whiche diuided by 400, de∣clareth vnto mee 240 pace, the true length frome B to A. Or by diuiding 1440000 the square of 1200, with 400 the partes cutte, you shall produce

in the quotient 3600, your proportionall partes founde by the rule of reduction, which augmented in 80, yeldeth 288000, and that diuided by 1200, bringeth in the quotient 240, which is the longitude AB, agreeing with the former operati∣on. This manner of reduction, I would wishe you diligently to note, for it shall hereafter in diuerse conclusions be vsed.

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