But Huygens, the great Dutch scientist, about 1556 was the first to explain the principles and properties of the pendulum as a time measurer and to apply it most successfully to clocks. 威廉·亨利·杜利特.世纪发明.
An instrument called a cyanometer, meaning measurer of blue, is used for ascertaining the intensity of color in the sky. 佚名.神奇的知识之书.
His skill as a painter of glass, as a draughtsman, and land-measurer, would earn him a living wherever he might go. 鲁伯特·萨金特·荷兰.历史性发明.
Where churches were being built he painted glass, where towns or nobles needed measurers or surveyors of their lands he worked for them. 鲁伯特·萨金特·荷兰.历史性发明.
Weight clocks had been in use as t ime-measurers since the thirteenth century, but they were, as we have seen, difficult to control and otherwise unreliable. 李贝.西洋科学史.