Originally Posted by Mike_L
Go to a highway weight
scale, the differences between the same unit can be significant.
I don't know if highway scales are accurate enough for what you want, but could be a quick way to get overall and axle
A feed store or grain elevator scale may be willing to let you take the time to get individual axle
weights on TV and trailer.
If you can, unhitch the trailer on the scale to get total gross trailer weight
Then subtract the trailer axle
weight for the hitch weight.
Take this from an engineer who worked at weighing
heavy earthmoving machines.
Be sure the approach and departure aprons are level with the scale platform so everything sits level as you weigh each axle.
Do not hold the brakes
or turn the steering . Put transmission in neutral.
Your most accurate reading will be with the whole rig on the scale at once.
Your individual axle weights should add up to within 1/2% of the total rig weight.