| 摘要 |
A measuring device includes a probe having a light source and a light sensitive diode therein such that light reflected from the surroundings of the probe can be detected by the light sensitive diode. A reference is provided such that the depth of the probe in, for example, animal fat can be measured and in particular the point at which the probe passes from fat to lean meat can be determined. A suitable scale or other indicating device is provided.
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