SIS F1

The SIS F1 paper size establishes dimensions of 677 mm x 958 mm, yielding an area of approximately 0.65 square meters. As the second largest format in the obscure Swedish F series extensions, it saw extremely limited adoption even domestically.

Lacking broad recognition, the niche SIS F1 does not typically have common alternate name variants. But in certain Swedish contexts, it may be referred to informally using its metric measurements or as “stort F ett” (large F one).

Conceivable use cases could include oversized diagrams, architectural drawings, academic posters, and digitally printed banners when SIS F0 is excessively large. But everyday practical utility is minimal for the unfamiliar SIS F1.

The SIS F1 emerged alongside other Swedish size extensions in a failed early 20th century attempt to systematically interpolate options between entrenched ISO standards. The goal was enabling subtle scaling of content across formats. But the endeavor was undermined by economic obstacles around manufacturing, lack of international uptake, and resistance to shifting norms. So today SIS F1 remains an obsolete curiosity, its backstory illustrating the resilience of existing standards.