| 摘要 |
PROBLEM TO BE SOLVED: To enable suppression of excessive fastening at the time of closing a cap by impairing finger hook during closing.SOLUTION: A cap comprises a cylindrical measurement part 21 with a lid, and a cap-side screw cylindrical part 22 which is provided in the measurement part 21 and can be engaged with a mouth part by a rotating operation. A peripheral wall part 23 of the measurement part 21 comprises notch parts 27 provided to face each other across a cylindrical central axis of the measurement part 21. In both notch parts 27, an opening-side finger hook surface 28B and a closing-side finger hook surface 28A, which extend in parallel to each other, are formed on the opening side and the closing side in a cap circumferential direction E respectively. A length dimension of the closing-side finger hook surface 28A in the cap circumferential direction E is smaller than that of the opening-side finger hook surface 28B. |
