5-0-5 INCHES OF WATER/10.4-0-10.4 cm of water Magnehelic Gauge & Mouthpiece Adapter Assy

The Dwyer Magnehelic Gauges have been the standard in the SCUBA diving industry for years. We recommend using the dual scale 5-0-5 inch of water/10.4-0-10.4 cm 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.