There are various types of gauges available on the market. There are various types of gauges on the market, including digital, analog and pneumofathometer versions. It is important to choose a gauge that suits your needs in order to ensure a safe dive. Your gauge must be calibrated at all times, especially when diving at high altitudes.
Analog gauges
An analog gauge for gauge diving is a tool that allows divers to determine the depth in the water. You can use them to indicate the depth by turning a needle around a graduated scale. These gauges are worn on the wrist or can be integrated into the dive computer. They are less accurate than digital gauges but more reliable than analog. An analog gauge offers the advantage that you won't run low on batteries.
The gauge's front is simple to read. It has numerical increments of depth ranging from 10'-40' and 20’ to 150'. A pressure gauge is also available on the gauge. It can display pressure from 0 - 5000 psi. A red screen means reserve air, and a green screen means main air.
Digital models
Divers desire to be able dive deeper and for longer periods of time, but a digital gauge doesn't allow them to do that. Temperature changes can affect the pressure difference between the gauge's water and the ambient. Fortunately, a mechanical gauge is much safer than an electronic gadget. 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 basic types for digital gauge dive computers. The hose technique is the simplest. It uses a hose for connecting the dive computer to a high-pressure port on stage 1. The wireless mode connects to the dive computer using an electronic transmitter attached at the first stage. This type is also available in console and wrist-mounted models.
Pneumofathometers
Pneumofathometers, which are used to gauge the depth to which air is being supplied to a diver, are devices that measure air pressure at the surface. These devices measure the air pressure near the surface and then display the depth in feet (or metres). These devices were used to be mounted on an air pump that provided breathing air for standard diving suits. The air supply was free-flow, with no back-pressure.
Gauge diving is for divers who wish to use a gauge. A gauge should be able to read between 130 and 160 percent the maximum operating pressure of the diving system. This range would be sufficient for systems operating at more than 3,000 PSI.
Submersible pressure gauges
A submersible Pressure Gauge (SPG), is a device that allows divers to track 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 allows the diver to minimize confusion about where the gauge is located and keeps it from getting lost. A SPG shows the remaining air pressure in pounds per square inch and is useful for monitoring your air supply while diving.
Scubapro's oil-filled analog depth meter features a Bourdon Tube design. It measures to a depth 200 feet. It also comes with a C1 compass, which attaches to the console boot for more versatility. This gauge is great for beginners as it is simple to use.
Compass
A compass that is easy-to-read is the best compass to use for gauge diving. It should be large enough for you to read underwater and with the correct markings. Look for a compasse with a bezel that includes indicator marks and compass headings.
A side view window is an important feature of a compass that allows gauge diving. It lets the diver see the direction in which the compass point. This allows the diver's to see the direction the compass is pointing even when it is dark.