iso209 – A document style for ISO standards
An early predecessor of Wilson’s iso.
Maybe you are interested in the following packages as well.
- returntogrid: Semi-automatic grid typesetting
- isonums: Display numbers in maths mode according to ISO 31-0
- typoaid: Macros for font diagnostics
- biblatex-gost: BibLaTeX support for GOST standard bibliographies