Force and load sensors cover electrical sensing devices that are used to measure tension, compression, and shear forces. Tension cells are used for measurement of a straight-line force "pulling apart" along a single axis; typically annotated as positive force.  Compression tension cells are used for measurement of a straight-line force "pushing together" along a single axis; typically annotated as negative force.  Shear is induced by tension or compression along offset axes.  They are manufactured in many different packages and mounting configurations.