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0.5 micron is least count of cmm machine
I think that you draw a square from that line, and find the area of that square.
They are called the coordinates. More specifically, the one measuring the distance in the horizontal direction is the abscissa, the one in the vertical direction is the ordinate.
a coordinate system is lines of longuitude and latitude that are used in a map to locate something. There is a coordiante in the Equatorial Coordinate System that is like longitude in the Geographical Coordinate System.....what is the coordinate? Celestial Equator?
The point where the y-axis and the x-axis cross is called the origin. In a Cartesian coordinate system, this point has the coordinates (0, 0), indicating that both the x and y values are zero. The origin serves as the reference point for measuring distances and positions in the coordinate plane.