Abstract: A two-wheeled cart for transporting scuba diving equipment is disclosed. The cart comprises an elongate sheet defining a top end, a bottom end, a generally planar front surface and a generally planar back surface. A base is attached to the bottom end of the sheet and extends at an angle of approximately ninety degrees relative to the front surface. Additionally, a pair of guides are attached to and extend from the back surface of the sheet in spaced relation to each other. An elongate shaft defines a shaft axis, with the shaft being rotatably connected to the guides. A pair of wheels attached to the shaft. Additionally, a support member attaches to and extends from the back surface of the sheet, between the shaft and the top end, with the support member defining a distal end and being sized such that the distal end terminates at approximately the shaft axis.

Abstract: A system for detecting cargo movement inside a cargo compartment of a craft, such as a plane or vehicle. The cargo is mounted on pallets that in turn are transported within the cargo compartment on rails end kept in place by latch assemblies. An arm assembly is mounted to a fixed convenient location inside the compartment at its distal end attached to a suitable position on the cargo being monitored. At least two parallel arms are pivotally mounted to the fixed position at the distal end. One of the arms to pivotally mounted indirectly through plate members. The plate member pivotally mounted to the fixed end includes a magnetic element that moves in physical proximity to a magnetic field sensor. If the separation exceeds a predetermined magnitude, the sensor generates an output signal that is transmitted to the pilot or driver for the necessary measures to be taken.