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Two gauges located on the upper left top of the launch console.

The gauge itself on the left reads "x100 PSI High Pres. Supply" and is labelled "N₂ Supply Pressure Calibrate". The gauge itself on the right reads "x100 PSI" and is labelled "He Supply Pressure Calibrate".

The switch under the gauge at left is labelled "Read"; the empty hole under the gauge at right is labelled the same.