This master thesis deals with the conception of a measurement setup for the optical diameter determination of a ring gauge. The ring to be tested has a nominal diameter of 98mm. The measuring arrangement is based on a tandem configuration consisting of two interferometers connected in series, similar to the Michelson interferometer. The light source used is a lowcoherent white-light diode with a mean wavelength of 828nm. The spectral half-width of the diode is 83nm. A use of white-light allows the absolute diameter determination of the ring gauge due to the occurring interference maximum. In addition, achromatic polarization optics are used to increase the contrast and to avoid subsignatures. Cylindrical lenses are used in the construction to adapt the wavefronts to the cylindrical profile of the ring gauge. After consideration of the theoretical beam path, the determination and design of necessary adjustment points are implemented. Partially these have a resolution of 15μm or 1’. Afterwards the design, construction and adjustment of the entire experimental set-up takes place. By stepwise changing of the mirror distance in the reference interferometer, the interference signature is determined. After successful detection and contrast adjustment by fine adjustment movements, the strip pattern is analysed. A contrast of 0.15 could be achieved.