International Organization for Standardization (ISO)
Latest
ISO 3098-6:2000
Scope
This part of ISO 3098 specifies the Cyrillic Russian alphabet for use with texts and/or as symbols in technical drawings and associated documents. It primarily concerns characters written with the aid of stencils, but is equally applicable to freehand lettering or other appropriate methods.
note: 1) Other Cyrillic alphabets include a number of additional characters which should be formed in a similar way.