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Reflex gauge glass

It works on the principle that refraction of light on the back of the rib glass plate causes the light rays to be reflected back from the steam space  and absorbed int he water spaces . This gibes a silvery appearance to water and dark to steam

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  1. Alvin EvansJune 10, 2021 at 5:25 AM

    I generally check this kind of article and I found your article which is related to my interest. Genuinely, it is good and instructive information about...... Thanks for sharing an amazing article here.
    sight glass

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