| 主权项 |
1. A system for taking a measurement at a connection element, which is already acted on by a preload and which protrudes from a specified surface, said system comprising:
an ultrasonic sensor, and a positioning bushing, which has a first recess and a second recess, the first recess being configured to receive the ultrasonic sensor at least in part, the second recess being configured to receive at least part of the connection element protruding from the surface, the positioning bushing being configured to orientate the ultrasonic sensor relative to the connection element in a specified manner. |
