The Madison County Public Library, has organized a collection of GPS enabled maps. Using a free smartphone App, you will be able to see your exact position on the map. It's like having a YOU ARE HERE sign follow you around. The maps may be found on our Community Information page or by clicking here.
micrometer (Î¼m) [ 1 mÄ«kromâ²ÉtÉr] 2  1 an instrument used for measuring small angles or distances on objects being observed through a microscope or telescope. 3  2 [mÄ«â²krÅmÄâ²tÉr] , a unit of measurement, commonly referred to as a micron, that equals one millionth (10-6) of a meter.
The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: Î¼m) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling 1 Ã 10 â6 metre (SI standard prefix micro- = 10 â6); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch).