Abstract
A dynamometer is described which was designed to measure the vertical and horizontal forces acting on simulated sugar beet crowns. The instrument is based on the use of two beams supporting a central plate which carries the beet crown. The beams carry electrical resistance strain gauges mounted in orthogonal planes and arranged in suitable bridges to measure the force components. The instrument exhibits linear force characteristics, negligible hysteresis, small interactions between the measuring bridges and the orthogonal force, and independence of the lines of action of the applied forces. Its measured sensitivities, to horizontal and vertical forces, were within 7·5% of those predicted.
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