Shader Forge experiment Final

I mucked around with the brushed metal Shader Forge totem from Kent Trammell's tutorial to see how changing some settings would affect the final result. I specifically looked at changing the texture space. I clicked on the object data icon (the triangle to the right of the "modifiers" spanner) and unchecked "Auto Texture Space". I set the size so that X, Y and Z all had the same figures. I started out with 1.0, but that looked too polished, and the additional scratches were too big. I then tried 0.1, which was almost what I wanted but the original brush marks looked too big. I then tried 0.01, but that made it look as if there were no additional scratch marks and there wasn't enough variation to the original brush marks. Finally I went for 0.075, because I had figured out the result I was looking for was somewhere between 0.01 and 0.1, and that was very close to the result I was looking for.