
If your heading matches a value in the top half of the OBS, then you have correct sensing and To/From indications.
If your heading can be found in the bottom half, you have reverse sensing and reversed To/From indications.

If your heading matches a value in the top half of the OBS, then you have correct sensing and To/From indications.
If your heading can be found in the bottom half, you have reverse sensing and reversed To/From indications.