For those who are economically strapped, like myself, there is an alternative to purchasing the "Coupler height gauge".
If you are a user of the EZ track, the Bachmann Hayes Bumper (model 44791) from my experience, the actual bumper is a perfect way to determine if your car is at the correct height. The Hayes Bumper stop should hit the coupler of the car in the center. When it does that, you can be sure the car coupler height will be where it should be.
See gauge image in Topic (click for image)
or
use that Bachmann EZ track Hayes bumper.
If you are a user of the EZ track, the Bachmann Hayes Bumper (model 44791) from my experience, the actual bumper is a perfect way to determine if your car is at the correct height. The Hayes Bumper stop should hit the coupler of the car in the center. When it does that, you can be sure the car coupler height will be where it should be.
See gauge image in Topic (click for image)
or
use that Bachmann EZ track Hayes bumper.