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AIR/O2 SURFACE PRESSURE GAUGE DIN 200/300 B
Surface pressure gauge used for checking tank pressure out of water.
DIN connection system. Purge knob. Easy to read dial. Scale up to 400 bar.
Is good for use with oxygen, but if used with air the O2 service is lost.
If you want to explore the mysteries of the underwater world and get your PADI...