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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; Gunter's Chain, the 22-yard-long, 100-link chain used by surveyors; Gunter's Line, the forerunner of the modern slide-rule; Gunter's Scale, a navigational tool; and the portable Gunter's 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).
Unique Identifier
AR924329
Type
Image
Purpose
Public
Size
3386px × 5157px
Photo Credit
HIP / Art Resource, NY
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Tags
17th century
ANGLE
angle measurement
ARITHMETIC
B&W
B/W
Black & White
Black and white
Cross-staff
Edmund
Edmund Gunter
Engraving
Geometric
Gunter
Male
Man
Mathematics
MATHS
MEASURING
Men
Monochrome
Oxford Science Archive
People
Print Collector1
SEVENTEENTH CENTURY
SURVEYING
Tool