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.
Frame size starts at one inch and goes up to as large as 24 inches. The size of an outside micrometer tells the largest size it will measure.The range of a 1 inch micrometer is from 0 to 1 inch. A 2 inch micrometer has a range from 1 to 2 inches.That is, a 2 inch micrometer will only measure work between 1 and 2 inches thick. A 6 inch micrometer has a range from 5 to 6 inches. It will only measure work between 5 and 6 inches thick.Inside and depth micrometers also have a 1 inch maximum screw movement.Extension rods are used to measure larger sizes. For example, a depth micrometer fitted with a 2 inch rod will measure depth between 2 and 3 inches.rame size starts at one inch and goes up to as large as 24 inches. The size of an outside micrometer tells the largest size it will measure.The range of a 1 inch micrometer is from 0 to 1 inch. A 2 inch micrometer has a range from 1 to 2 inches.