Check the listing for details. Mares M Depth Gauge Wrist Capillary (414436) - Wrist-Mounted Analog Capillary.... Condition: New. Listed at 78.57 USD. The Mares M Depth Gauge Wrist Capillary combines simplicity, reliability, and precision in a streamlined analog design ideal for both recreational and professional divers. Compact and efficient, the M Depth Gauge Wrist Capillary features a 60mm low-profile case that minimizes drag and integrates seamlessly into any gear setup.