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Photo tachometer for a digital multimeter
Photo tachometer for a digital multimeter
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机译:用于数字万用表的光电转速表
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摘要
A apparatus for determining the rotational speed of an object or an assembly. The apparatus includes a device that emits a light as well as detect the light reflected from the measured object. A reflective surface is attached to the object to enable it to reflect the light from the device. The device is connected to an analyzer that reads the detected signal and display the results.
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