There are many kinds of gauges. 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
Divers can use analog gauges to gauge dive. They are able to measure the depth of 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 has one advantage: you won't run out of batteries.
The gauge's face has been designed to be easy-to-read. It comes with numerical increments of depth that range from 10' - 40' and 20'- 150'. The gauge also includes a pressure gauge. The gauge displays pressures from 0 to 5500 psi. A red screen indicates reserve air, while the green screen shows main air.
Digital models
Many divers want to stay long and dive deep, but a digital gauge won't help them do this. Temperature changes can cause the difference in pressure between gauge and ambient water to change. A mechanical gauge is far safer than an electrical 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 digital gauge diving 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 uses an electronic transmitter to communicate with the computer. This type can be used with console and wrist-mounted models.
Pneumofathometers
Pneumofathometers are devices used to gauge the depth of air supplied to a diver. These devices measure air pressure at the surface and then indicate 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 completely free-flowing, and there was no back-pressure.
A gauge should have a range between 130 and 160 percent of the maximum operating pressure for gauge diving. This range should be adequate for systems that operate at 3,000psi.
Submersible pressure gauges
A submersible pressure gage (SPG), which allows scuba divers keep track of their pressure, is a device used by divers. 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 helps the diver avoid confusion and keeps the gauge 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 offers an oil-filled analog depth gage with a Bourdon tub design. It can measure to depths of up to 200 feet. It also comes with a C1 compass, which attaches to the console boot for more versatility. This gauge is ideal to beginners, as it is simple and straightforward to use.
Compass
A compass that is easy-to-read is the best compass to use for gauge diving. It should be large enough that it can be read underwater, and the right markings. You will want a compass that has a bezel with indicator marks at every five degrees and compass headings in increments of 30 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 see the direction that the compass is pointed even in complete darkness.