The complete measurer; or, The whole art of measuring .. (1789)
Hawney, William · London : Rivington · leaf 353
a Piece of Land in theForm of a right-angled Parallelogram^ orlong Square^ or which is Jomething mar thsitForm, T^^O know whether any Angle in the Field be aX Right-angle, or not, you may take a Piece ofBoard about 4 or 5 Inches broad, and an Inch thick,either round or fquare; and, with a Saw, cut… … Suppofe you ^vould obftrvethe Angle A, toknow whether itbe a Rioht-ang;le(or nearly fo;)prick up your^>tick, with iheCrofs upon ir, ata little DiHancefiomtheFence,aszla-y and havingfet uptwoMarks,as at h and r, ofequal Diit.-.ncefr(>m the Fence,turn one cf theSlits direftly to-wards^; andthen…
Measurement · Geometry
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![An illustration from Ioannis Padvanii Veronensis Opvs de compositione et vsv multiformium horologiorum solarium pro diuersis mundi regionibus : idq[ue] vbique locorum tam in superficie plana horizontali, quam murali quorsumcumq[ue] exposita sit, pertractans : nvper brevissimis ac facillimis doctrinis ab eo excogitatis luculenter traditum (1570)](https://img.insideoutlibrary.com/img/200/ia-ioannispadvaniiv00padu-32-0.webp)
