Description
This gauge is generally used for the boilers and the basic structure is same as transparent type but the gauge body will be manufactured in trapezoid shape. Green and red filter glasses are used between the illuminator and gauge body which displays the red and green colors on the steam and water respectively by penetrating red on steam area and refracting green on water area. Mica Shield should be sued to protect the glass form steam for boiler type gauges and it should be replaced periodically.
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