A device that indicates how far a diver is below the surface of the water
A device that indicates to a diver how deep they are.
Graduated ruler, which passes through a crosspiece and is used to measure grooves and holes. The ruler is put into the hole in the object of to measure and the crosspiece rests on the surface.
The depth gauge permits the accurate setting of the depth of a cut or drill.
A depth gauge is a pressure gauge that displays the equivalent depth in water. It is a piece of diving equipment often used by SCUBA divers.