With this program, professionals can easily determine the content of horizontal fuel tanks. Enter the level data and the program calculates what the content is. The space that the tank still has can also be viewed immediately so that you can safely make a delivery or simply place an order with your fuel supplier.There are 3 gauge options: gauge in centimeters, liters or percentage. You can also easily create and print a level table so that your supplier can easily determine how much fuel can be safely unloaded.The calculation is based on the Shell water level book. The volume and free space of the tank is only an indication. Inclined position or tailor-made combi tanks can lead to deviating results.