Glad you like it ragsta, thanks.
I’m a little reluctant to post this pic taken by the painter with 6mm and 15mm models shown for comparison, because it shows other manufacturers’ models and I’m not sure he got their consent, but here goes! 28mm would be about twice as tall as the 15s I guess, maybe a bit less. (The model to the left is our 6mm Neptune light mech, a 6mm model that many gamers use as 15mm war robots.)