There are many types of gauges on the market. There are three types of gauges available: Analog, Digital, and Pneumofathometer models. It is important to choose a gauge that suits your needs in order to ensure a safe dive. Also, calibrating your gauge is crucial for decompression safety, especially at high altitudes.
Analog gauges
Analog gauges for gauge diving can help divers understand the depth in the water. To indicate the depth, they use a needle that pivots around a graduated gauge. These gauges can either be worn on the wrist or integrated in the dive computer. While they are more reliable and accurate than digital, the analog ones can be worn on the wrist or integrated into the dive computer. One advantage of using an analog gauge is that you will never run out of batteries.
The gauge's front is simple to read. It offers numerical increments in depth of 10'-40', 20'-40', and 20'-150'. The gauge also features a pressure gauge. It displays pressure ranging from 0 up to 5000psi. The red screen is reserved air while the green screen is main air.
Digital models
Many divers desire to dive deep and stay there, but a digital gauge can't be used. Temperature changes can affect the pressure difference between the gauge's water and the ambient. A mechanical gauge can be safer than an electronics gadget. The gauge can keep track of your dive time, depth and will also calculate your Nitrogen retention to prevent you from getting decompression sickness.
There are two types of digital gauge dive computers. The hose method uses a hose to link the computer to the first stage's high-pressure port. Wireless mode, on the contrary, attaches an electronic transmitter to the first stage to communicate to the computer. This type of diving computer is also available in wrist-mounted and console models.
Pneumofathometers
Pneumofathometers can be used to measure the depth of air that is supplied to divers. These devices measure the air pressure near the surface and then display the depth in feet (or metres). In the past, these devices were mounted on the hand-cranked air pump that supplied breathing air to the standard diving suit. The air supply was free-flow, with no back-pressure.
If you are interested in gauge diving, you should get a gauge with a range from 130 to 160 percent of your diving system's maximum operating pressure. This range is sufficient for systems operating at 3,000 psi and more.
Submersible pressure gauges
A submersible pressure gage (SPG), which allows scuba divers keep track of their pressure, is a device used by divers. It also displays the current depth and the direction the diver is moving. 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. A SPG shows the remaining air pressure in pounds per square inch and is useful for monitoring your air supply while diving.
Scubapro manufactures an oil-filled, analog depth gauge. The Bourdon tube design measures down to 200 feet. The console boot can also be attached to it with the C1 compass. This gauge is best suited for beginners because it is simple and easy to use.
Compass
It is important to be able to read the compass easily when gauge diving. It should be large enough to be easily read underwater and have the appropriate markings for your requirements. Look for a compass with a bezel with compass headings grouped in 30-degree increments and indicator marks every five degrees.
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 to follow the compass' course even in complete darkness.