Abstract: A position measuring device having a graduated scale carrier member which is secured to a holder is described. The graduated scale carrier member is secured to the bottom side of the holder, so as to float over a viscous liquid film. The holder, in turn, is elastically supported on a mount. The measuring graduation marking is scanned through the holder, which is preferably made of transparent glass.

Abstract: A length measuring device and method for mounting the same is provided. A tube-shaped housing, which is sealed by mounting blocks attached at each end is fastened on an object by the mounting blocks. The mounting blocks have inserting elements with protrusions which interlockingly engage cutouts formed in the housing and, in this way, fix the housing in place in the measuring direction (X) with respect to the mounting blocks (5). The mounting blocks fasten the housing on an object in such a way that the housing undergoes the same thermal expansion and shrinkage as the object to which it is mounted.