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On the previous page, triangulation was discussed. In order to make the desired force calculations, a loop height measurement is required. Bond testers are traditionally used for force measurement only, but one can also use the positional accuracy to measure distances with the same wire pull sensors. Advanced bond testers can even combine the measurement of loop heights with wire pull tests. Click here for more information on loop height measurements.
In the illustration, two tests are simulated. The one on top shows the best measurement, when the sample is clamped to the base. In the one on the bottom, the sample is not clamped. Hence,