SIS F10

The SIS F10 paper size establishes extremely compact dimensions of just 30 mm x 42 mm, enclosing a mere 0.0013 square meters. Wedged between lesser used SIS F9 and ISO B9, it represents one of Sweden's generally unsuccessful 20th century attempts to expand format options.

Lacking any meaningful adoption, the niche SIS F10 does not benefit from entrenched alternate monikers. But occasional Swedish references as “F tio” (F ten) persist informally.

Conceivable applications could include large diagrams, folding charts and graphs, academic posters, and marketing displays where SIS F9 still underwhelms. But everyday practical use is nonexistent for the unfamiliar SIS F10.

The SIS F10 emerged from Sweden's early 1900s endeavor inserting granular sizes amidst ISO's prevailing options. The vision was enabling subtle scaling of content across sheets. But the attempt was undermined by economic obstacles, lack of global uptake, and resistance to shifting norms. So today SIS F10 remains an obsolete relic, its backstory illustrating the resilience of existing standards despite reform efforts.