Turotest Waste Gauge In 2005 Turotest introduced a new range of waste gauges to complement their existing range of Fuel and Water level gauges for the marine market. Available in the classic black dial and black bezel version or the more contemporary white dial and chrome bezel combination. The gauges are calibrated to suit any standard USA resistance waste senders (240-33 Ohms) including our hugely popular stainless steel black water senders from Wema. Available in either 12 or 24VDC versions all Turotest marine gauges feature stainless steel housings and are hermetically sealed from the front to withstand the rigours of the marine environment. Turotest manufacture an extensive range of marine and automotive gauges which are supported by a two year warranty and available throughout Australia and New Zealand via a network of distributors and dealers.