The total length of all phone numbers (STD code and the phone number) in India is constant at 10 digits, for example 7513200000 signifies a STD code i.e. 751 Gwalior & the phone number 3200000. Land line numbers are at most 8 digits long (usually in major metros).
Millimeter definition, a unit of length equal to one thousandth of a meter and equivalent to 0.03937 inch. See more.
Centimeter Definition. Centimeter is considered a common unit of length used in SI. It is equivalent to 10 millimeters or 1/100 th (10 -2) of a meter. Years ago it was a basic unit in formerly used CGS (centimeter-gram-second) unit system, but in modern times the role of basic unit of length is played by meter.