This is the Scuba Tools 0-3 Magnehelic Gauge & Mouthpiece Adapter Assy
- The Dwyer Magnehelic Gauges have been the standard in the SCUBA diving industry for years.
- We recommend using the 0-3 inch of water gauge for checking 'cracking' effort.
- The expanded scale covers all industry second stage regulator 'cracking' effort specifications and provides much more accurate and consistent readings.
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