The plopper is the low cost tool you can use for measuring depth to water.  Our plopper is made from stainless steel, is 25mm .  A “plopping” sound van be heard when it makes contact with the surface of the water.

A 30m tape on a windup reel is also available to order as well.

Please Note – Maximum depth recommended is approximately 30m, otherwise you may not hear the noise. Also, not recommended for use in noisy environments such as a busy road or noisy site, as again you may not hear the whistle.