There are many kinds of gauges. There are several types of gauges, including analog, digital and pneumofathometer models. You need to find the right gauge for your diving needs. It is important to calibrate your gauge at all altitudes for safety decompression.
Analog gauges
An analog gauge for gauge diving is a tool that allows divers to determine the depth in the water. They work by having a needle pivot around a graduated scale to indicate the depth. These gauges can be worn on a wrist or integrated into the dive computer. Although they are more reliable than the digital gauges, analog gauges can still be used. An analog gauge has one advantage: you won't run out of batteries.
The gauge's face is easy to read. It has numerical increments of depth ranging from 10'-40' and 20’ to 150'. The gauge also includes a pressure gauge. The gauge displays pressures from 0 to 5500 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. 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. A gauge not only keeps track of dive time and depth but it also calculates Nitrogen retention and helps prevent decompression illness.
There are two basic types for digital gauge dive computers. The hose method is a simple method, using a hose to connect the dive computer to the high-pressure port on 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 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.
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. A gauge with this range would suffice for a system that operates at 3,000 psi or 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 SPG is usually attached to the regulator via a high-pressure hose. This arrangement helps the diver avoid confusion and keeps the gauge 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's oil-filled analog depth meter features a Bourdon Tube design. It measures to a depth 200 feet. You can attach the C1 compasses to your console boot for additional versatility. This gauge is great for beginners as it is simple 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 compasse with a bezel that includes indicator marks and compass headings.
A gauge diver's compass should have a side view window to allow them to see the direction it is pointing. This allows the diver even in complete darkness to follow the course of the compass.