| 摘要 |
A retractable stamp has a longitudinal spring with a tension that can be adjusted. The adjustable stamp has a housing, a base, a cover, a handle, an adjustment knob and a position ring. The housing has a character unit mounted inside, and the base is mounted on the housing. The cover is mounted outside the housing and the base, and the handle is connected to the cover. The longitudinal spring is mounted inside the handle and retracts the character unit into the cover. The adjustment knob is mounted rotatably in the handle, and the position ring holds the adjustment knob in place. When the adjustment knob is turned, the tension of the spring can be changed to make the character unit stamp a clear imprint.
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