NewMar Scottsdale Class A 2006 Owner's Manual page 39

Left Rear
Right Rear
The recommended procedure to weigh a motorhome accurately is on
individual corner scales. Since these are not always available, below is
a diagram of how to weigh a motorhome on a typical truck scale.
Note: Since only one corner can be weighed at a time, the remaining three
corners need to be as close to the scale as possible without being on the
scale and the unit needs to be as level as possible. Remember, wind and
rain can cause inaccuracies of weights.
2:28
FIGURE 1
FIGURE 2
2006 Scottsdale Class A by Newmar
Left Front
Right Front