| 摘要 |
This disclosure describes touch sensitive indicators comprising a plurality of rods that are movable radially inwardly and outwardly with respect to a tubular housing. The lobe of a cam formed on the inner side of a knob impinges on the inner edges of the rods. The arcuate distance moved by the knob determines the number of rods that are moved from inner or inaccessable positions to outer or accessable positions. In this manner a touch sensitive indication of the arcuate distance moved by the knob is provided.
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