$700 DRO on a $100 horizontal mill? Come on. DROs are nice, but it's not a gotta have. Shell mill arbors, stub arbor for up close work with a plain cutter, boring head, Morse Taper-40NST adapters so you can use your drill chucks with it, clamp kit, parallels for the vise, shell mills, facing mills, plain mills, arbor spacers (if you don't have a full set …