To make a dial lock easily memorizable by changing to a meaningful word, since a conventional dial lock is difficult to memorize due to a meaningless figure.

A dial 1 of the conventional dial lock is made easily memorizable by changing to the meaningful word, by changing to an alphabet 2 and a Japanese syllabary character 3. When further converted into a Chinese character, the Chinese character is meaningful and easily memorizable, and is hardly forgotten by writing in an instruction manual by investigating a meaning by a dictionary in addition to this. In a number lock, this is written in the instruction manual by literary license.