| 摘要 |
A measuring device (1; 21; 33) for controlling an installation torque of a fastening element (4; 32) and securable to engagement means (3; 35) of the fastening element (4; 32), includes an indicator (5; 24) for a visual display of the installation torque, a plurality of microcapsules filled with a dispersible color die and supported on the indicator (5; 24), and a transparent, at least regionwise, covering (7.1; 7.2; 22) provided on an outer surface of the indicator (5; 24); and an opening (27) through which a fastening element (4; 32) can extend.
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