There are countless shapes and sizes, but they all boil down to several basic types. Dial, number,. The instruments may look different and show different results, but all use the same.
The first and most common measure is the stick type, also known as the pen type. It consists of a metal or plastic casing, a pocket clip and a deep collet, which is usually used to release relief from the pressure on the other side.
The second type of pressure gauge is the dial type. It contains a shield around the background pressure scale dial on the same dial. An air chuck or a length of hose is connected to the dial. These gauges are easier to read but more expensive.
The third type is the digital tire pressure gauge. It consists of a number of necessary electronic products around the protective sleeve that the drive reads in the form of digital readings. An air collet is attached to the rigid or length of the hose casing. These meters are the easiest to use, they have a direct LCD reading, and some even talk! The electronic components used in these meters are called strain gauges. The air from the tire enters the pressure gauge in the body, which pushes the corresponding variable. The resulting bending strain gauge changes its resistance value. This change in resistance is a change in the input to the microprocessor and a binary signal that is used to drive the LCD reading. These gauges are very accurate and extremely durable in a variety of shapes and sizes.