| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact instrument with higher cost performance.SOLUTION: A waterproof case 4 contains a measurement section 10 and a display section 5. The display section 5 is disposed on a base 6, and an outer circumferential section of the base 6 is fixed to an inner cross section 7a of a circular holder 7. Inner magnets 8 are dispersedly disposed on an outer circumferential surface 7b of the holder 7. A circular groove 7d is formed at an inner circumferential surface 7c of the holder 7, and an inner case guide 3b formed at a top of an inner case 3 is fitted into the circular groove 7d making a display unit 9 rotatable. An operation ring 11 is attached outside the waterproof case 4. Outer magnets 12 are dispersedly disposed on an inner circumferential surface of the operation ring 11. Once the operation ring 11 is rotated, the display unit 9 rotates, is guided by an inner case guide 3b by the movement of the inner magnets 8 following the outer magnets 12 of the operation ring 11, thereby changing a display direction of the display section 5. |
