| 摘要 |
In the measuring instrument according to the invention, the rollers (6, 7) are attached to upwardly extending support arms (8, 9). The rails (12, 13) are fastened via spacer elements (17, 18) to the floor (19) and covered over the entire length by roof-like covers (20, 21), which cover at least parts of the support arms (8, 9) as well. As a result, the accumulation of scale and other contaminants on the rails is prevented. <IMAGE>
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