| 摘要 |
A device for reliably counting and simultaneously marking objects includes a tubular sleeve slidably emergent from a housing that contains an electronic counter and electromagnet. A marking tip and ink reservoir are slidably held within the sleeve and are forwardly urged by a spring. Whenever the sleeve is pressed against an object, the electromagnet drives the marking tip forwardly to mark the object and, simultaneously, electrical contacts interactive between the sleeve and housing register one count on the counter.
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