The RD312 locates lost or buried metal manhole covers or valve boxes in the highway, verge, garden or field.
It is light and very simple to use with the position indicated by a varying pitch tone, the highest pitch indicating the maximum response over the target.
The RD312 is robustly constructed from aluminium and high impact ABS which is weatherpoof to IP54 and folds for easy storage and weighs just 1kg.
In normal use it will run for 30 hours on a 9v alkaline battery.
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