Specialized tool used by professionals in the oil and gas industry to measure the depth of liquids—such as petroleum, fuel, or water—within large storage tanks and tankers.Key ComponentsTape Reel: A coiled, high-accuracy measuring line typically made of stainless steel or carbon steel for corrosion resistance. This specific model features a 50m length marking on the crank handle.Ergonomic Handle: A prominent bright orange, impact-resistant plastic grip designed for comfort and a secure hold during prolonged field use.