Newby question. When I was using quick check feature not to long ago, checking the height of 2 plains, and then a couple of weeks later I went and used quick check on the legnth of a part and the dimension came back .236 larger than what it should have been( double checked the dimension with our shop certified caliper).
When you're measuring points on a surface with an arm, you have to be sure that your probe is pointing at an angle no more than 90 degrees from a normal to the surface you're measuring, or as Bigguns and Matthew said, the software will compensate to the other side of the probe. If you don't have CAD, use 3 sample hits for your points to be sure the vector is good for the software to figure out what you want measured. If you don't, it will snap to the closest axis based on the angle you're holding the arm. There's a tutorial from PCDmis Portable for the arm that will show you images of how to properly CMM different features (holes, studs, points). The tutorial is somewhere in the PCDMis folder.
When you're measuring points on a surface with an arm, you have to be sure that your probe is pointing at an angle no more than 90 degrees from a normal to the surface you're measuring, or as Bigguns and Matthew said, the software will compensate to the other side of the probe. If you don't have CAD, use 3 sample hits for your points to be sure the vector is good for the software to figure out what you want measured. If you don't, it will snap to the closest axis based on the angle you're holding the arm. There's a tutorial from PCDmis Portable for the arm that will show you images of how to properly CMM different features (holes, studs, points). The tutorial is somewhere in the PCDMis folder.
