Abstract: A wedge shaped hollow float is mounted by one end to a channel bolted to the inside of the sloping roof of a grain bin approximately two feet from the top thereof. A curved rod is pivotally secured by the inner end thereof to the other end of the float and extends through the channel and through the roof and has an indicating disc on the outer end thereof. As the bin fills, the angle of repose of the grain engages the other end of the wedge shaped float and gradually lifts it as the bin continues to fill. When the indicator is fully extended, a rod and disc indicates to the operator that the flow of grain to the auger hopper should be shut off and the two foot space at the top of the bin is sufficient to hold the grain left in the auger and in the hopper thus avoiding any spillage.

Abstract: Checking fixtures for determining the effective tooth spacing along the pitch circle diameter of splined or gear-like members having exterior or interior teeth. Each checking fixture has two sets of L-shaped teeth which interfit in a first position for loading the member to be checked and are separable to a second position for checking the effective tooth spacing along the pitch circle diameter and providing a direct reading of the size of each part checked through a readout device. A wear compensator supports and axially adjusts the position of the member to be checked along the axial length of the partial teeth to prevent localized wear on the partial teeth.

Abstract: According to a level meter of this invention, a pressure corresponding to a fixed water level formed by means of a reference chamber and a vertical pipe is applied to one pressure inlet port of a differential pressure detector, and a pressure corresponding to a water surface or water level inside a container to be measured is applied to the other pressure inlet port of the differential pressure detector by means of a lower pipe. Then, the water level inside the container is measured through the difference between these two pressures, the density of water to generate the pressures to be applied to the differential pressure detector, and the density of steam inside the container and the reference chamber. Adiabatic jackets are attached to the peripheries of the vertical pipe and the lower pipe.