A waterproof housing for underwater use by a diver of a hand-held magnetometer that is enclosed by the housing, comprising,
- an elongate, generally hollow tubular-shaped lower housing portion having a first diameter and being closed at one end and open at another end, the lower housing portion adapted to fully enclose an elongate lower tubular-shaped housing portion of the hand-held magnetometer,
- a cylindrically-shaped hollow upper housing portion having a second diameter substantially larger relative to the first diameter of the lower housing portion and attached to the open end of the lower housing portion, the upper housing portion open at its other end and adapted to enclose an electronics and power supply housing portion of the hand-held magnetometer, and
- a base seal removably connected to the open end of the upper housing portion, the base seal removed to insert the hand-held magnetometer therein so that its tubular-shaped housing portion slides through the upper housing portion into the lower housing portion and the electronics and power supply housing portion of the hand-held magnetometer is captured within the upper housing portion, the base seal secured into the upper housing portion open end to provide a fully functional hand-held magnetometer protected from water incursion at depth,
- the base seal further including:
- a central plug portion extending into the upper housing portion of the waterproof housing, the central plug portion including a pair of spaced o-rings that seal against an interior circumferential surface of the upper housing portion, the central plug portion including a compression seal at an end thereof that biases against the electronics and power supply housing portion of the hand-held magnetometer,
- a pair of spaced latches on opposite external side surfaces of the seal that mate with corresponding clamp latches attached to a circular clamp on the outer surface of the upper housing portion, each set of latches coming into locked engagement under the actuation of a corresponding cam lock on the circular clamp to secure the base seal onto the upper housing portion, and
- a test port extending from the top of the base seal.