What is the primary use of a numobarometer hose in diving?

The primary use of a manometer hose in diving is to determine the diver's depth. The manometer is a device that measures pressure, which can be directly related to depth in a diving context. As a diver descends, the water pressure increases, and this increase in pressure can be displayed on the manometer. Knowing the pressure allows divers to accurately calculate their depth since water pressure increases by approximately one atmosphere for every 10 meters of seawater. This information is crucial for divers to stay within safe depth limits, monitor the effects of pressure on their bodies, and manage gas consumption effectively. Therefore, the ability to gauge depth accurately using a manometer hose is an essential safety measure in diving practices.