Papers by Author: Otto Jusko

Abstract: The experimental results for the determination of the form of thin cylinders (Ø ~ 2.5 mm) as well as step heights of gauge blocks (~ 100 µm) and roundness profiles of test samples from metal or glass with different diameters between ~ 2.5 mm and 80 mm using two multi-wavelength diode laser interferometers are presented and discussed.

Abstract: This paper presents results of the dimensional calibration of piston-cylinder assemblies to be used for the joint NMI project “Re-determination of the Boltzmann constant”. Several measurements optimization strategies are described. For the first time 3D uncertainties in the range of 8 nm (piston) and 16 nm (cylinder) could be achieved.