The H2Odyssey ultra compact air pressure indicator gauge is a small device that allows you to read correctly the air pressure in your scuba tank as well as the secondary tank of your scuba gear with ease. This air gauge is a handy diving equipment made of high quality material that makes it easy to use and long lasting. The ultra lightweight pressure gauge is travel friendly and can be carried easily with all other scuba equipment. The small size of this 2 pressure gauge keeps it out of your way when you need to check your high pressure air tank. This air meter is very convenient when you want to top up the air in the diving tank of your dive gear. It is easy to use too. The air pressure regulator gauge can easily screw in directly to any first stage scuba regulator and can also be attached to a high pressure scuba hose. This high pressure gauge from H2Odyssey is a small size gauge that comes with standard 7/16" screw in threads that give a just right fit with any high pressure port. Our pony bottle low-pressure gauge has 2 different air pressure units. One display shows from 0 to 350 pressure bar while the other shows from 0 to 5000 psi. The dial meter of this pressure gauge with hose is a multi color red green and yellow clear display. The analog vacuum gauge has big numbers that are easy to read. This large display air pressure gauge can be with any dive equipment and buoyancy control device. H2Odyssey pressure gauge attachment for pump in scuba diving is an ultra durable, long lasting, and highly reliable diving gauge that is a must have with any under water sports gear.