There are many different types of gauges that are available. These include Analog, Digital and Pneumofathometer models. For safe diving, it is crucial to select a gauge that meets your requirements. Your gauge must be calibrated at all times, especially when diving at high altitudes.
Analog gauges
Divers can use analog gauges to gauge dive. They are able to measure the depth of the water. To indicate the depth, they use a needle that pivots around a graduated gauge. These gauges are worn on the wrist or can be integrated into the dive computer. While the analog gauges are more reliable than digital ones, they may not be as accurate. An advantage of an analog gauge over digital is the fact that you never run out.
The gauge's display is easy to read. The gauge has numerical increments that range from 10' to 40’ and 20' up to 150'. The gauge has a pressure indicator. It displays pressure from 0 to 5000 psi. The red screen represents reserve air, while green indicates main air.
Digital models
Divers often want to dive deep and stay for long periods of time. However, a digital gauge is not able to help them. The difference in pressure between the gauge and the ambient water can be affected by temperature changes. A mechanical gauge is safer than an electronic one. In addition to keeping track of your dive time and depth, the gauge will calculate your Nitrogen retention and help prevent decompression illness.
There are two main types of digital gauge diving computer. The hose connection is a basic method that uses a hose. This hose connects the dive computer with the high-pressure port of the first stage. The wireless mode, on the other hand, uses an electronic transmitter attached to the first stage to communicate with the dive computer. You can also find this type of diving computer in console or wrist-mounted models.
Pneumofathometers
Pneumofathometers measure the depth of the air supply to a diver. These devices measure the surface pressure of air and indicate the depth either in feet or meters. These devices were originally mounted on a hand-cranked pump that supplied breathing oxygen to the standard diving suit. The air supply was free-flow, with no back-pressure.
For gauge diving, divers should buy a gauge that is between 130-160 percent of the maximum operating temperature of their diving system. This range is sufficient for systems operating at 3,000 psi and more.
Submersible pressure gauges
Submersible pressure gauges (SPG) are devices that allow divers to monitor their air pressure. It displays current depth and directions of diver movements. The regulator is connected to the SPG via a high pressure hose. This arrangement is useful for divers to avoid getting confused about the location of the gauge and helps prevent it from being lost. An SPG displays the air pressure remaining in pounds per square inch. This is useful for monitoring air supply when diving.
Scubapro produces an oil-filled analog depth gauge with a Bourdon tube design that measures to a depth of 200 feet. It comes with a C1 Compass, which attaches directly to the console boot. This gauge is great for beginners as it is simple to use.
Compass
Easy to read compass is the best for gauge diving. It should have adequate markings to suit your needs and be large enough to be readable underwater. A compass should have a bezel that contains compass headings organized in 30 degree increments, and indicator marks for every five degrees.
Side view windows should be included in a compass used for gauge diving. This allows the diver to see which direction the compass is pointed. This allows the diver even in complete darkness to follow the course of the compass.