Apollo Command Module trainer control panel gauge, as removed by NASA.
Would be located on the right side of Panel 2 (middle panel).
Displays Glycol Primary/Secondary Steam Pressure on the left scale, and Glycol Discharge Pressure on the right scale (for monitoring of the Environmental
Control System cooling operation).
Many original stamps and labels, including red label from Link Division of General Precision which built NASA’s Apollo spacecraft
simulators.
