Madison County, Kentucky. Madison County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 82,916. Its county seat is Richmond. The county is named for Virginia statesman James Madison, who later became the fourth President of the United States.
A micron gauge measures the amount of air or ânoncondensablesâ and moisture in a system. The unit of measurement used is a âmicron.â The gauge is placed between the vacuum pump and the middle port of your manifold set. The lower the micron reading, the deeper the vacuum. The deeper the vacuum, the lower the amount of air and moisture in any given system.
V. Ryan Â© 2004 2009. The depth gauge micrometer is a precision measuring instrument, used by engineers to measure depths. Each revolution of the rachet moves the spindle face 0.5mm towards the bottom of the blind hole. The diagram below shows how the depth gauge is used. The ratchet is turned clockwise until the spindle face touches the bottom of the blind hole. The scales are read in exactly the same way as the scales of a normal micrometer (see previous information sheets).