| 摘要 |
Disclosed is a measuring tape including a tape reel driven by a reversible motor through an annular wheel via a first transmission gear set to let off a tape blade for taking measurements or to rewind it by means of the control of a switch, a guide roller and a pressing roller driven by the annular wheel through a second transmission gear set to guide out the tape blade at a higher speed than the tape reel so as to prevent the tape blade from being loosened, and a release control mechanism controlled by the switch to move the pressing roller within the operative and the non-operative positions.
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