tachymeter (n.)

测量仪器，1836年，源自 tachy- “迅速”+ -meter。相关词汇： Tachymetry。

M. GAETANO CAÏRO has invented an instrument, to which he has given the name of Tachymeter (rapid measurer). Its object is to give the area of plane surfaces bounded by any outline whatever, without the necessity of any arithmetical operation. [Magazine of Popular Science and Journal of the Useful Arts, vol. ii, 1836]

加埃塔诺·卡伊罗（M. GAETANO CAÏRO）发明了一种仪器，他给它起名为 Tachymeter（rapid measurer）。它的目的是在不需要进行任何算术运算的情况下，给出由任何轮廓界定的平面表面的面积。[《大众科学杂志和实用艺术杂志》，第二卷，1836年]