Pressure measurement
Many other hybrid units are used such as mmHg/cm or grams-force/cm (sometimes as kg/cm without properly identifying the force units). Using the names kilogram, gram, kilogram-force, or gram-force (or their symbols) as a unit of force is prohibited in SI; the unit of force in SI is the newton (N).
Weight
In United States customary units, the pound can be either a unit of force or a unit of mass. Related units used in some distinct, separate subsystems of units include the poundal and the slug. The poundal is defined as the force necessary to accelerate an object of one-pound "mass" at 1 ft/s, and is equivalent to about 1/32.2 of a pound-"force". The slug is defined as the amount of mass that accelerates at 1 ft/s when one pound-force is exerted on it, and is equivalent to about 32.2 pounds (mass).