| 摘要 |
A device for reliably counting and simultaneously marking objects includes an elongated housing, a container of marking fluid disposed within the housing, a fluid release mechanism associated with the container, and an axially moveable hollow spacer adapted to contact an object to be counted and marked and through which marking fluid is accurately directed onto the object. The spacer is rearwardly displaced by contact with the object, such displacement being detected by an electrical switch. An electronic controller, when activated by the switch, causes the release mechanism to emit a pulse of marking fluid, and at the same time registers an accumulating count.
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