The Inspector 2000 automatically discriminates between symbologies, calculates the Print Contrast Signal (PCS), calculates Average Bar Deviation, calculates ratio, performs mod check calculations and verifies encoding. The unit reads bi-directionally all the popular linear symbologies including UPC, EAN, Code 128, Code 39, Interleaved 2 of 5, and more. Analysis information appears on an easily read 32-character alphanumeric LCD and also is indicated with distinct tones depending on whether a bar code is in or out of specification.