To assess the quantity of lading remaining in an MC-306/DOT-406, what tool should be used?

When assessing the quantity of lading remaining in an MC-306/DOT-406 tanker, the use of a dipstick is appropriate as it provides a direct measurement of the liquid level within the tank. This method is reliable because it allows for an accurate reading of the liquid depth, which can be used to calculate the volume remaining based on established tank dimensions and capacities.

A flow meter is typically employed for measuring the flow rate of liquids rather than determining how much is left in a stationary tank. A pressure gauge may provide information about the internal pressure of the tank but does not indicate the liquid level or remaining quantity. Visual estimates, while quick, are subjective and can lead to inaccuracies, making them a less reliable option compared to the precise measurements that a dipstick offers. Using a dipstick ensures compliance with safety protocols and provides a clear and measurable way to determine the contents of the tanker accurately.