| 摘要 |
<p>A level for measuring, including a level body having a recess, a vial positioned within the recess and secured to the level body, and a resilient member positioned between the vial and the level body to act as a resilient backer to the vial during the positioning of the vial. Also, a method of installing a vial in a level, a method of measuring the angle of an elongated member having a convex, transverse cross-section, and a level for measuring having a vial assembly that is rotatably positioned within the level body.
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