An ad hoc unit of force previously used to measure the hardness of tablets in the pharmaceutical industry. The Strong-Cobb test machine applied pressure using a hand-operated air pump, and the hardness was read on a gauge marked in 30 arbitrary units called Strong-Cobb units. It is generally believed that 1.4 Strong-Cobb units represented roughly 1 kilogram of force, so each Strong-Cobb unit represented roughly 0.7 kilogram of force or about 7newtons