Apollo A7L/A7LB Suit Pressure Gauge

For several years, there was a "suit cart" which contained various suit-related items which visitors could handle. I was able to photograph some of the items, including an Apollo suit pressure gauge.

The gauge was mounted on the right wrist on the A7L suit and the left wrist of the A7LB suit to measure the suit's internal pressure. The gauge was calibrated in PSIG ("pounds per square inch/gauge", meaning over ambient pressure; this is what most people think of when they hear "PSI") and goes from 2.5 to 6. The suit's desired pressure was 3.7 PSIG.