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.
What there is to know about a Depth Micrometer. A depth micrometer is used to measure the depth of holes, slots, counterbores, recesses, and the distance from a surface to some recessed part. This type of micrometer is read exactly opposite to the method used to read an outside micrometer. The zero is located toward the closed end of the thimble. in depth amount as the thimble moves toward the base of the instrument.