They are fitted together such that when the mounting block is affixed to {HEAD ~ the film or sheet die}, the inverted T shaped profile plate holder fits snugly into a rectangular opening of {TAIL ~ the mounting block} and the eccentric adjustment pin fits in a hole in the mounting block and a groove like slot in the inverted T shaped holder 
They are fitted together such that when the mounting block is affixed to { HEAD ~ the film or sheet die } , the inverted T shaped profile plate holder fits snugly into a rectangular opening of { TAIL ~ the mounting block } and the eccentric adjustment pin fits in a hole in the mounting block and a groove like slot in the inverted T shaped holder
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH