Using the Weighting tool
Once you have completed building the tool it is now time to use it. To properly use the tool you put the car onto the track (the re-railer makes it much easier). Hook the coupler into the Kadee tool and look at the markings at the opposite end of the car. Look at the mark closest to the end of the car to find your weight, it will be the number marked plus 1 ounce.
For example, this uncompleted InterMountain car reaches the line marked 3 1/2, so I will need to make sure that the car weighs in at 4 1/2 ounces.
I measure my cars on a jewler’s scale, but any scale capable of measuring in ounces can be used.
Here is a picture showing the weights (available from Micro-Mark) installed into the car, as you can see I needed to add 2 ounces.