Master MOCer Ralph Savelsberg, who has captured each in astonishing detail.

More amazingly, each model is only mini-figure(ish) scale, yet packs in as much realism as models several times the size. There’s more to see of the whole superbly presented rig and its constituent parts at Ralph’s ‘DAF XF-105 and Claas Combine Harvester’ Flickr album, plus you can read his interview here at TLCB via the first link in the text above.