Balzers QMG / QMS 420 Quadrupole Mass Spectrometer With MM420, QC420, DO420 Cards

Used unit which powers up and gets the readout shown. I am not a tech and have no way to test this item further. Foam vent covers on the sides need replaced.Sold on an "as is'Basis. Buyer receives the item shown in condition shown. No warranty offered and no returns accepted. By purchasing buyer is agreeing to these terms.