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What is the purpose of Red and White stripes on Level glass gauge?

What is the purpose of Red and White stripes on Level glass gauge?

What is the purpose of Red and White stripes on Level glass gauge?

(OP)
Dear Instrumentation experts, Could you please suggest, What is the purpose of Red and White stripes on Level glass gauge? ( simple hollow transparent tube ). This level tube is installed at open to atmosphere water tank.

RE: What is the purpose of Red and White stripes on Level glass gauge?

Got a picture? I don't want to play 20 questions to find out where the tape is.

David Simpson, PE
MuleShoe Engineering

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist

RE: What is the purpose of Red and White stripes on Level glass gauge?

If the stripes are vertical, they help to make different coloured fluid levels visible under different lighting conditions, particularly clear fluids.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: What is the purpose of Red and White stripes on Level glass gauge?

From a catalog:
"This type of gauge glass has red and white meniscus enhancing lines. This is achieved by the application of specially developed paints that are bonded to the glass without etching."

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