market 1977-12

A new range of easier-to-use radio transmitting probes for tracing underground pipes, drains and sewers has been introduced by E!ectrolocation Limited, Bristol. Intended for use in conjunction with their GPR 04 search instru- ments, the new probes look the same as earlier designs and are interchangeable with them, but they incorporate two new features which make them more convenient to handle on site and easier to track.