Track gauge for setting the "alternate" 33mm track spacing for T-track modules.
For straight tracks, the gauge will also set the recommended "setback" of the tracks from the front of the module base.
The lozenge shaped protrusions on the top of the gauge allow checking the spacing of curved tracks, and tracks in other "inland" locations.
For layout and planning purposes, the front "tab" measures exactly 33mm in length.
Designed for the North Texas TTrack club