Milling unit with gimbal suspension versions Milling unit with gimbal suspension versions E01H5/09 the elements being rotary or moving along a closed circular path rotary cutter digging wheels E01C23/08 for roughening or patterning for removing high spots or material bonded to the surface markings removing matter not bonded to the surface E01H0001000000 roughening or detaching ice E01H0005120000