| 摘要 |
A water well bored into the earth, the well having a well casing extending below a water level to the bottom of the well, is provided in combination wi th a continuous water level indicator. Such continuous water level indicator incl udes a float which is adapted to float, as well as to rise and fall unhindered as t he level of the water in the well rises and falls. A tube extends outwardly adjacent the top of the well from the well to the interior of a dwelling. An indicator is provided w hich includes a dial and a spring-loaded pointer which is movable to different in dicia on the dial of the indicator. A pulley is provided at the junction of the well casing and the tube. A lightweight operating filament is provided, one end of which is connected to the upper end of the float, the intermediate portions being movable in a frictionless manner with respect to the well casing and the tube, and the other end being connected to the pointer. The strength of the spring is selected to be exact ly equal to the buoyant weight of the float, so that, as the float rises and falls, t he pointer moves to indicate water level.
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