| 摘要 |
PURPOSE:To achieve a higher accuracy of the apparatus by providing a vibration mass section of a tuning fork with an adjusting means in a direction orthogonal to a vibration surface of the tuning fork to adjust the adjusting means from outside through a through hole of a cylindrical body. CONSTITUTION:A through hole 41-3 is provided individually as piercing a cylindrical body 41-2 on the side covering both vibration mass sections 1-1 of a tuning fork 1 (1-1 to 1-5) and a thread 1-5 for adjusting center of gravity positions of the mass section 1-1 is made to engage the through hole 41-3 by inserting a screw driver or the like from outside. Thus, after the assembling of the apparatus, when the center of gravity positions of both the mass sections 1-1 are deviated from each other, the screw 1-5 can be turned to adjust the center of gravity of the mass section 1-1. |
