Measurement of micro gears: comparison of optical, tactile-optical, and CT measurements. - Ulrich Neuschaefer-Rube; Markus Bartscher; Marko Neukamm; Michael Neugebauer; Frank Härtig; Jürgen Goebbels; Karsten Ehrig; Andreas Staude (Three-Dimensional Imaging, Interaction, and Measurement, 2011)