Home made mini track level tool

This is a small level that I keep in my train show tool box to check the front to back level on modules during set up and also on the home layout. There is usually room to place this across the tracks but sometimes there is not.

One day the frame fell apart and I could see that the individual bubbles could be removed.  The 45 degree bubble served no purpose in my application so I removed it to make a special tool.

Attaching a small strip of styrene to this with adhesive keeps it from rolling.  Now this can be placed across the rails anywhere along the line to check for level even in those places where the spaces is tight.