This post is a slight aside to my normal activities - activities that, incidentally, are continueing but at a rather boring pace and am saving up progress for an entry that might actually be interesting!

Anyway, yesterday, I was fortunate to come across a couple of boxes of bits and pieces most of which I could identify and either put to good use or find homes for but these two items have stumped me and I wonder if anyone can identify them. The first is aluminium and has a small stamp which looks like GW so am thinking it might be one of GW models jigs. As there is no website I can't verify this. Hopefully someone will recognise it from the pics - have added some dimensions to help;

The second smaller item is steel and again looks like a jig of some sort. There were quite a lot of Exactoscale P4 track parts and the groove does look rail like so wonder if this might be the right direction;

Any help would be greatly appreciated.