| 摘要 |
PROBLEM TO BE SOLVED: To provide an angle measuring tool capable of measuring horizontality, an angle of an object or the like easily, accurately and inexpensively, and capable of conducting also measurement a time interval by a time interval. SOLUTION: In this angle measuring tool, powder having a temporarily solidified function and water are sealed in a rectangular parallelopiped of transparent or translucent hollow container 1, the powder and the water are turbid-mixed by vibration or the like to be fluidized, the powder is separated from the water when standing, and the powder is solidified temporarily while forming a horizontal layer. COPYRIGHT: (C)2005,JPO&NCIPI
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