1. Examination by an expert proofreader An experienced proofreader, who has been ordained to examine Torah scrolls, Tefillin, Mezuzot, and Megillot, must ensure that there is not the slightest suspicion of error in the form of any letter. For if even a single letter is not in the shape required by Jewish law, the entire product is unfit. The expert must also conduct a "missing or extra" examination, that is, to ensure that not a single letter is missing, or that there is not a single extra letter.
2. Computer check A computer check that ensures, in absolute fashion, that there are no "missing" or "extra" letters, is an important supplementary tool for the proofreader. Statistically, 83 percent of the Torah scrolls that underwent a computer check were found to contain a defect. This statistic graphically illustrates the importance of such a test. Each of the products of "Oter Israel" is thoroughly examined, by both methods: by an expert proofreader and by a computer.
"Oter Israel"`s worldwide reputation as a reliable source of kosher Torah scrolls, Tefillin, Mezuzot, and Megillot of the highest quality is due, among other reasons, to the continuous and exacting application of this system of quality assurance.