There are many types of gauges on the market. There are three types of gauges available: Analog, Digital, and Pneumofathometer models. Choosing a gauge that fits your needs is essential for ensuring a safe dive. For safety at high altitudes, it is essential to keep your gauge calibrated.
Analog gauges
An analog gauge for gauge diving is a tool that allows divers to determine the depth in the water. To indicate the depth, they use a needle that pivots around a graduated gauge. These gauges can be worn on a wrist or integrated into the dive computer. They are less accurate than digital gauges but more reliable than analog. An advantage of an analog gauge over digital is the fact that you never run out.
The gauge's face has been designed to be easy-to-read. It has numerical increments of depth ranging from 10'-40' and 20’ to 150'. The gauge also features a pressure gauge. It can display pressure from 0 - 5000 psi. A red screen means reserve air, and a green screen means main air.
Digital models
Many divers want to stay long and dive deep, but a digital gauge won't help them do this. The difference in pressure between the gauge and the ambient water can be affected by temperature changes. A mechanical gauge is far safer than an electrical gadget. Not only will it keep track of your dive times and depth but also calculate Nitrogen retention, which can help prevent decompression sickness.
There are two main types of digital gauge diving computer. The hose method uses a hose to link the computer to the first stage's high-pressure port. The wireless mode, on the other hand, uses an electronic transmitter attached to the first stage to communicate with the dive computer. This type of computer can also be found in console and wrist-mounted versions.
Pneumofathometers
Pneumofathometers measure the depth of the air supply to a diver. These devices measure the air pressure at the surface, and indicate the depth in metres or feet. These devices were originally mounted on a hand-cranked pump that supplied breathing oxygen to the standard diving suit. The air supply was free flowing, 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 gauge (SPG) is a device that allows scuba divers to keep track of their air pressure. It can also display the current depth and direction of the diver's movement. The SPG is usually attached to the regulator 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. The SPG is a gauge that shows you the remaining air pressure in psi. It's useful for monitoring your air supply during diving.
Scubapro manufactures an oil-filled, analog depth gauge. The Bourdon tube design measures down to 200 feet. You can attach the C1 compasses to your console boot for additional versatility. Because it is easy to use, this gauge is ideal for beginners.
Compass
The easiest compass for gauge diving to use is one that is easy enough to read. It should be large enough to be easily read underwater and have the appropriate markings for your requirements. Look for a compass bezel with compass headings that are grouped in 30-degree increments. Indicator marks appear 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.