Aron Stenning:
My friend found this for me!
Aron Stenning:
Here's another full-length photo of it.
Aron Stenning:
Different edges for different railhead measurements. I believe that 1 side is for actual rail, the other is for use in points.
Aron Stenning:
Measurement for the track! (4ft 8)
Aron Stenning:
It's a shame that the level is broken.