Method of measuring angles with a cross-staff, 1636
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Method of measuring angles with a cross-staff, 1636
Method of measuring angles with a cross-staff, 1636. Edmund Gunter (1581-1626) was an English mathematician and astronomer who invented many measuring instruments which bear his name; Gunters Chain, the 22-yard-long, 100-link chain used by surveyors; Gunters Line, the forerunner of the modern slide-rule; Gunters Scale, a navigational tool; and the portable Gunters Quadrant. He also introduced the words cosine and cotangent into the language of trigonometry. From The Description and Use of the Sector by Edmund Gunter. (London, 1636)
Media ID 14869458
© Oxford Science Archive / Heritage-Images
Angle Arithmetic Cross Staff Edmund Geometry Gunter Mathematics Maths Measuring Oxford Science Archive Surveying
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