Suunto SM-16 Wrist Depth Gauge 150Reliable and accurate depth gauge Suunto SM 16 depth gauge features a reliable Bourdon tube mechanism with a gear system, a maximum depth indicator, a possibility to adjust depth gauge when diving in higher altitudes, and a phosphorescent dial face. The scale is available in meters (45 m and 70 m) or feet (150 ft and 230 ft). The SM 16 depth gauge can be fitted to the Combo console.