Buehler Metaserv 3000 Polisher Grinder with Vector LC Power Head. Buehler Metaserv 3000 single plate automatic polishing machine with 200mm platen for the polishing of metallurgical samples. The Buehler polisher for preparation of metallurgical samples is manufactured for robust mineral composite offer low vibration and resistance to corrosion. A high specification grinder polishing machine for preparation of multiple and single samples. The MetaServ 3000 features an infinitely variable speed control of 50 to 500 rpm. The Vector LC Power Head is an easy to operate, economical power head with basic features for low volume applications. Single sample pressure prepares one to four samples and allows pressure to be tailored for each sample. 120V, 50/60Hz, 3.5A