| 摘要 |
PROBLEM TO BE SOLVED: To prevent a correction shaft from being engaged to a bell or a bottom board and to share the mounting part of the bell and the bottom board and the insertion hole of the time correction shaft for simplifying parts, by providing an aim correction mechanism for correcting aim setting time at the front side of a clock and inserting the time correction shaft projecting from the rear-surface side of the clock into the through hole of a mounting pipe. SOLUTION: A bottom plate 6 in a flat-plate shape is provided with a hollow placement part 6a for supporting the central part of a bell 2 and a mounting pipe 6c projecting from the placement part 6a, and a screw groove is formed at the outer periphery of the mounting pipe 6c. A dial 12 is provided on the front surface of a front plate 10, and a movement 14 is fixed to the rear surface of the front plate 10. The movement 14 is accommodated in the bell 2 to make the lock thin. When the movement 14 is to be accommodated in the bell 2, a time correction shaft 14a can be positioned at the rear surface side of the bottom plate 6 by inserting the time correction shaft 14a into a through hole 6b being provided at the bottom plate 6.
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