Twin auto-feed micro-polisher used for polishing specimens for examination with a metallurgical microscope, comprising polishing disc assembly by E. W. Jackson & Son, Cheswold Works, Doncaster, with 2 micrometre and 6 micrometre discs each driven by a Gryphon electric motor by Brooke Motors Ltd, Huddersfield, estimated date 1950-1959, plus two Metaserv auto-pol sample holding arms by Metallurgical Services, Betchworth, Surrey, England, for mounting independently of the disc assembly and probably of later date.