English
Gunter's scale
From Gunter + -'s + scale, from the surname of its inventor, the English clergyman, geometer, and mathematician Edmund Gunter (1581–1628).
Today it means
noun A wooden rule, two feet long, on one side of which is marked scales of equal parts, of chords, sines, tangents, rhombs, etc., and on the other side scales of logarithms of these various parts, by means of which many problems in navigation and surveying may be solved mechanically, using only divides.
Language periods are conventional ranges, not dates for this word.
Etymograph / Gunter's scale