The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length.
Similarly, what is the symbol for inch?
The international standard symbol for inch is in (see ISO 31-1, Annex A) but traditionally the inch is denoted by a double prime, which is often approximated by double quotes, and the foot by a prime, which is often approximated by an apostrophe. For example, three feet two inches can be written as 3′ 2″.
What is the inch mark?
The international standard symbol for a foot is "ft" (see ISO 31-1, Annex A). In some cases, the foot is denoted by a prime, which is often marked by an apostrophe, and the inch by a double prime; for example, 2 feet 4 inches is sometimes denoted as 2′−4″, 2′ 4″ or 2′4″.
What is the meaning of CM?
The centimeter (abbreviation, cm) is a unit of displacement (distance or length) in the cgs (centimeter/gram/second) system of units. The cm is equivalent to 0.01 meter, and there are about 2.54 centimeters in one linear inch. One micrometer (symbolized µm or µ), also called a micron, is equal to 0.0001 (10-4) cm.