| 摘要 |
The plastics game counter gives a combination of numbers from 1 to 42, being for use in a national lottery and preventing repetition. - It comprises two plastics discs 0.5 mm. thick, joined together by a central rivet giving minimum friction while allowing a max. number of revolutions. A recess in the top disc exposes a number when stationary, while an 18 mm. recess allows turning by hand and contains an advertisement or trade mark. A protruding 28mm. lip is provided for holding the counter. FL
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