There are different techniques for the restoration of erased markings inmetals. Non-destructivemethods
are generally preferable. The only frequently used non-destructive method is the magnetic technique.
The different kinds of magnetic restoration methods are discussed in the article. In the experiments
described, the applicability of magneto-optical methods for the restoration of obliterated markings was
examined. The results show that the methods are suitable and the required equipment does not cause
high expenses