1/25 scale angle iron

Plastruct and Evergreen Scale Models both make architectural shaped styrene plastic in all different sizes. It is not by scale. You should be able to find them in good hobby shops in either the train section or supplies section. There is no way to tell what size plastic to use if you want to scratch it. This is due to angle iron coming in many different sizes. Sorry, no clear cut answer.

Thanks Gino, Thats what I needed, I'll just have to eyeball the scale, I'm using it to build the armored tanker truck from the road warrior for a post apocalyptic diorama. Thanks again T.L.