| 摘要 |
A level indicator for a fluid reservoir comprising a body defining an opening therein, a stem slideably received in the opening, a float mounted at one end of the stem, a first electrical terminal means mounted on the body, a second electric terminal on the stem, the two electric terminal means being arranged to come into contact with each other when the stem and float are in a predetermined position relative to the body characterized in that the second electric terminal comprises an electrically conductive surface on the stem and the first electric terminal means is resiliently urged into contact with the stem.
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