"The letter C marks the point where the vessel to be exhausted is attached." -Century, 1889
A bookcase, or bookshelf, is a piece of furniture, almost always with horizontal shelves, used to store…
Indicator that establishes the horizontal when a bubble is centered in a tube of liquid
Machinists' level. A spirit level, bubble level or simply a level is an instrument designed to indicate…
"In straight levers of the first kind, the fulcrum is between the power and the resistance, as in fig…
This apparatus illustrates the principle stating that liquids tend to find their own level.
"By measuring the weight required to move the end cap of any of the shown tubes filled with water, it…
This illustration shows a Surveyor's, or Y-level. In use, the telescope is set perfectly horizontal…
"a, a, a, represents the water-level of a pond or reservoir upon elevated ground. From this pond a line…
"When any liquid is placed in one or more of several vessels communicating with each other, it will…
The instrument called the water-level illustrates the principle of equilibrium in vessels communicating…