Abstract: A rail connection for connecting track assemblies of a toy model railroad, includes connecting clamp members extending between aligned rails of two juxtaposed track assemblies, the clamp members having an elongated base portion and generally U-shaped clamp parts having spaced legs extending upwardly from the base portion, the U-shaped clamp parts clampingly engaging the rails of the track assemblies to thereby connect the track assemblies.

Abstract: A device for precision grinding and polishing the surfaces of a workpiece such as the surfaces of molds or the like includes a base means on which the workpiece is movable in one plane. A stand supported on the base plate is provided with a carrying arm on which there is mounted an oscillating device operable to oscillate a tool. The carrying arm is arranged such that it may be adjustable in all three spacial coordinates. The oscillating tool serves as the carrier for the grinding medium for grinding and polishing a workpiece disposed on the base means.