JW Fishers has specialized in the design and manufacture of underwater search equipment for almost 50 years. The Proton 5 is a top performing, microprocessor driven, marine magnetometer detection ...

The small variations in the Earth’s magnetic field are being measured using this proton precession magnetometer (PPM) which detects the ferrous objects on land and at sea. To map the positions of ...

A number of archaeological groups and marine service companies are acquiring boat-towed metal detectors to assist in locating shipwrecks and to perform geophysical surveys. These devices can locate a ...