passtück for strassenablauf or einsteigeschacht

摘要

An adjustment piece for use as a spacer between a covering and an opening in the ground, the adjustment piece comprising a frame 13 having a series of elongate depressions 15 positioned side by side and aligned with the periphery of the frame, succeeding depressions 15, 16 in an outward direction towards the periphery of the frame being located alternately on two main opposed faces of the frame, in which the depressions are arranged in groups spaced from each other by solid portions 17 of the frame extending transverse to the elongate depressions. IMAGE