Adapter plugs; Adapter rings for attaching objectives on cameras; Computer card adapter; Electric adapter cables; Electrical adapters; Hardware and software adapter for coupling a GPS receiver to the microphone input of a digital camcorder; Kits comprised primarily of a fire hose and also including a fire nozzle and non-metallic fire hose adapter sold as a unit; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diop...