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 blade micrometer measures narrow grooves and keyways. Blade micrometer is used for measuring where the standard micrometer spindle could not be accommodated. combination set. Combination set is used as a rule, a square, a miter, a depth gage, a height gage, and a level. Combination set. The combination set consists of: blade, center head, protractor head, combination square head, scribe, and spirit level.