| 摘要 |
<p>The invention concerns a measuring transducer, of the type comprising a stiff support case (1), a rule (2) in the form of a thin steel tape, pretensioned and suspended at the ends into the support case (1) and carrying etched the graticule of the measuring scale, as well as a rule reading head (4) mounted in the case slidable along the tape. According to the invention, to the support case (1) there is associated at least one tensioning bar (7), fixed to the case in a single point and freely expansible in respect thereof for the remaining part, through the effect of temperature, the ends of the thin tape of the rule (2) being anchored to the ends of said bar (7).</p> |
