# Leupold dating prefix suffix

However, some modern building codes require that the millimetre be used in preference to the centimetre, because "use of centimetres leads to extensive usage of decimal points and confusion". This also applies to mass, for which the SI base unit (kilogram) already contains a prefix.For example, milligram (mg) is used instead of microkilogram (µkg).The kilometre, metre, centimetre, millimetre, and smaller are common.(However, the decimetre is rarely used.) The micrometre is often referred to by the non-SI term micron.Hence 100 m is preferred over 1 hm (hectometre) or 10 dam (decametres).The prefixes hecto, deca, deci, and centi are commonly used for everyday purposes, and the centimetre (cm) is especially common.

The SI prefixes are standardized for use in the International System of Units (SI) by the International Bureau of Weights and Measures (BIPM) in resolutions dating from 1960 to 1991.Where Greek letters are unavailable, the symbol for micro 'µ' is commonly replaced by 'u'.Prefixes corresponding to an integer power of one thousand are generally preferred.Each prefix name has a symbol that is used in combination with the symbols for units of measure.For example, the symbol for kilo- is 'k', and is used to produce 'km', 'kg', and 'k W', which are the SI symbols for kilometre, kilogram, and kilowatt, respectively.

In the arithmetic of measurements having units, the units are treated as multiplicative factors to values.