Low Pressure Oxygen Meter operates from 0 to 200psi and only has three markings up to 20#. It's about 0, 7, 14, 20. All the operations shown in the Victor tip charts (cutting, welding, etc.) are done at pressures below 60psi, so they could install a 0 to 100 gauge that would let you do this would set the lower end pressure with much greater accuracy without using a magnifying glass.
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