| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tilt angle measuring apparatus which is inexpensive and can easily measuring an angle. <P>SOLUTION: The tilt angle measuring apparatus includes: a main body; a liquid medium filling section provided on the main body; and a reference line provided on the main body. The liquid medium filling section constitutes a closed circuit, and has an angle display scale along a part or all of the liquid medium filling section. In a preferable embodiment of the tilt angle measuring apparatus of the present invention, the closed circuit is at least one type selected from a group consisting of a circle, an elliptic, a square, an oblong, a rectangle, a triangle and a polygon, or a circle, an elliptic, a square, an oblong, a rectangle, a triangle and a polygon having a twist or an overhead crossing in a part of the closed circuit. <P>COPYRIGHT: (C)2012,JPO&INPIT |
