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).
Gravitational metric system
In Germany, the kilopond lost its legal status as a unit of force on the first of January 1978 and is replaced by SI units. A kilopond can be converted to the SI unit Newton by multiplication with the standard acceleration "g":