Here are some details to help you in aligning the roundhouse and the turntable.

  1. Forward edge of center roundhouse track must be 95 feet from the center of the turntable.
  2. Use the Surveyor Rulers to set up the distance.
  3. When rotating the roundhouse and/or turntable use the azmuth readings in Surveyor to set the turntable track parallel to the center track in the roundhouse.

Here is a screenshot of the setup:

Here's a screenshot of what comes in the package: