Gauge Glasses.
Please take note of the red and white chevrons behind the Gauge glasses, in the photograph.These chevron plates are positioned behind the glasses to assist in making the water in the glass tube more visible, by refraction.
To explain, where the level of the water is in the glass the angle of the red and white stripes change, which makes it easier to see the level of the water.
Gauge glasses do not generally come out ready fitted with chevrons, but they are easy enough to make and fit.
The Gauge glasses should be illuminated to make them more visible.
Please take note of the red and white chevrons behind the Gauge glasses, in the photograph.These chevron plates are positioned behind the glasses to assist in making the water in the glass tube more visible, by refraction.
To explain, where the level of the water is in the glass the angle of the red and white stripes change, which makes it easier to see the level of the water.
Gauge glasses do not generally come out ready fitted with chevrons, but they are easy enough to make and fit.
The Gauge glasses should be illuminated to make them more visible.
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