| 摘要 |
A liquid level gauge including an elongate support member, and, a plurality of optical fibres carried by the support member, said fibres extending on the support member generally lengthwise thereof and generally parallel to each other, said fibres being spaced apart from each other circumferentially of the support member and each fibre being divided at a point along the length of the support member by a gap so arranged that the transmission of the light across the gap from one part of a fibre to the other part thereof is determined by the presence or absence in the gap of the liquid being gauged, the gaps of the fibres being spaced lengthwise of the support member.
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