Our shul has about 10 Sifrei Torah (no exaggeration) that are all passul. I am curious how complicated it would be to discover where the problems are.
Someone told me that today, many sofrim (scribes) use computers to discover where errors are. Is this true? If so, how does the process work? Do they put the Torah scroll on a flat-bed scanner or do they wave a wand scanner and then compare each column with some standard? How would that work, since everyone's writing style is a bit different and also, the column starts are endings in each Torah may be different. (Note: for this answer, I am seeking a somewhat "computer / technical" answer, if possible. Is programming built into the system so that it is smart enough to recognize font nuances and compare it accurately with the computer's own font "standard"? Are there settings for, e.g. Sefardi writing styles?) Is it possible that the computer may declare an error when there really is none b/c it cannot recognize font nuances in good detail?
If the process is done manually, how long does it take, typically for a sofer to inspect an entire Torah scroll? I would imagine that this is a very laborious process if one doesn't know where the mistake(s) is / are.
Approx. what percentage of sofrim use a computer to assist them vs. completely manually inspecting?
Lastly, what does it typically cost, in the U.S. to have a sofer inspect an entire Torah and repair it (assuming these are minor repairs such as correcting a letter here and there vs. replacing an entire parchment segment.