| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a height adjuster, allowing a person having no skill for execution of mason to install a secondary product of concrete by simple work in work for installing the secondary product of concrete. Ž<P>SOLUTION: This height adjuster 1 is formed of a placing member 2 including a wedge member 3 whose side section is a right-angled triangle, a guide 8, which is an inverted right-angled triangle to the wedge member 3, and shaped to stride over the wedge member 3, and a steady member 6 for stopping the movement of the secondary product of concrete on the upside in the direction of inclination. The height adjuster 1 is set with the secondary product of concrete lifted. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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