OMS Compass with Gauge Mount & Bungee Straps A14118011 OMS Compass with Gauge Mount & Bungee Straps. Liquid Filled Compass with Phosphorescent Face, easy to read high contrast Digits & Large Side Reading Window. Bezel Ribbing provides high grip when rotating wearing thick Gloves & ratchets at every 5 degrees. In a Tough Low Profile Depth Compensating Mount with Bungees for Wrist Mounting over your Wet or Dry Suit. Balanced for use in the Northern Hemisphere only. Weighs only 0.1 Kg.