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Profile Measurements
inside of small holes |
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Measurements inside of small holes:The 3D-Nanofinger® can operate with a wide range of sensing probe tips. It is possible to measure with small sharp versions inside of small holes, even in 3D and into fine structures like windings.The following dimensional measurements were made inside of an internal screw thread with 1.4 mm diameter cut into an alumina block. The shape of the winding is visible in the following 3D data set:
The following Linescans were performed through this winding area to measure some typical values of the screw thread. First the angle of each winding is measured by placing fit lines into the graph:
The resulting angle is 59.9 degree. Scale bars can be placed into the diagram to determine distances. In this way the depth of the winding is determined to 153.8 microns. So the winding was drilled a bit too deep compared with the norm value, see next image:
A few areas in the 3D-image show small defects within the winding. Such defects are visible in the following Linescan:
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