GW Base Size question (Kroot Example)

[LameBeard]

I have some figures that I wanted to base bigger than 25mm and smaller than 32mm, and obtained some 28mm ish bases. I also obtained a few Kroot bits.

 

i saw that according to the website, Kroot Farstalkers are on 28.5mm except one is on 32mm and one is on 28mm.  What the heck is going on there - one model is on a very marginally smaller base? Which one? Or is this a typo on the GW site?

 

But the main question is, for official GW bases, are there genuinely both 28mm and 28.5mm, can you tell the difference in person, and which models tend to come with which, if there is a rule of thumb?

[Brother Anderson]

To be honest I struggle to tell the difference between 28.5mm and 25mm, so if there is one that's 28 I don't think anyone could tell the difference even if you told them!