Why three weighings are useful
A single scale ticket tells you axle-group weights at that moment. Three controlled weighings let you isolate the trailer’s effect on the tow vehicle and evaluate a weight-distribution hitch.
Weigh 1: trailer connected, WDH engaged
Load the truck and trailer as they travel. Keep people, fuel and cargo consistent. Record steer, drive and trailer axle weights with the weight-distribution hitch engaged.
Weigh 2: same setup, WDH disengaged
Without changing cargo or passengers, disengage the weight-distribution bars and weigh again. Record steer, drive and trailer axle groups.
Weigh 3: loaded truck only
Disconnect the trailer and weigh the tow vehicle in the same loaded condition. The difference between truck-only weight and the hitched truck weight helps determine actual tongue weight and loaded trailer weight.
Read the result
TowAtlas calculates actual loaded trailer weight, actual tongue weight, tongue-weight percentage, front-axle load removed with the WDH off and the amount restored when the WDH is engaged.
Keep the comparison controlled
Changing fuel, passengers or cargo between tickets makes the differences less meaningful. Save all three tickets and note the setup used.
Common questions
How many weighings do I need for tongue weight?
The TowAtlas method uses three controlled weighings to isolate loaded trailer and tongue weight.
Can one CAT Scale ticket show tongue weight directly?
Not by itself. Tongue weight is derived from differences between controlled weighings.
Open the related TowAtlas calculator and use your saved Garage setup when available.