| 摘要 |
A adaptor for mounting a wheel alignment instrument on a wheel has a frame provided with a slideway and a slide assembly on the slideway of the frame. Both the frame and the slide assembly have gripping elements that are capable of bearing against and gripping axially directed surfaces on the wheel rim. Once the adaptor is positioned on the wheel rim with its gripping elements located along an axially directed surface, one of two actuating elements on the slide assembly is turned. The one actuating element causes the slide assembly to grip the slideway and then move outwardly so that the gripping elements firmly grip an inwardly presented surface, such as the inside face of a rim flange. The other actuating element causes the slide assembly to grip the slideway and then move inwardly so that the gripping elements firmly grip an outwardly presented surface, such as the outside face of a rim flange.
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