| 摘要 |
<p>The invention concerns a device for adjustable fixing of the vial (6), called vertical vial or round vial, of a bubble level. On the body (2) of the level, on two opposite sides of a circular orifice (15) receiving the vertical vial (6), two opposite ribs (16, 17) are formed, each having a groove (18, 19). Two matching washers (20, 21) are located on either side of the vial (6) engaged in the orifice (15). Two set screws (10, 31) link the two washers (20, 21) by passing through the respective grooves (18, 19) of the two ribs (16, 17).</p> |
