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. Your gauge must be calibrated at all times, especially when diving at high altitudes.
Analog gauges
Analog gauges are used to help divers gauge the depth of the sea. 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. 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 face has been designed to be easy-to-read. It offers numerical increments in depth of 10'-40', 20'-40', and 20'-150'. The gauge also includes a pressure gauge. It displays pressure between 0 and 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. A mechanical gauge can be safer than an electronics gadget. A mechanical gauge is safer than an electronic gadget. It can track your dive time and depth as well as calculate your Nitrogen retention. This will help to prevent decompression illnesses.
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. Wireless mode, however, connects the first stage with an electronic transmitter. This type of computer can also be found in console and wrist-mounted versions.
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). These devices were previously mounted on the hand-cranked compressor that supplied air to standard diving suits. The air supply was free-flow, with no back-pressure.
Divers who want to use gauge diving should purchase a gauge with a range of 130 to 160 percent of the maximum operating pressure of their diving system. This range should be adequate for systems that operate at 3,000psi.
Submersible pressure gauges
A submersible pressure gauge (SPG) is a device that allows scuba divers to keep track of their air pressure. It displays the current depth as well as the direction that the diver is moving. An SPG is typically attached to the regulator by a high-pressure line. This arrangement makes it easy for the diver to locate the gauge easily and prevents it from becoming 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
It is important to be able to read the compass easily when 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.