In the study of Old Norse literature, (often shortened to 1758x) refers to a specific manuscript in the Thott collection .
: In ATEX and IECEx standards, the "X" suffix indicates that the equipment is subject to "specific conditions of use" for safe operation in hazardous (explosive) environments. In the study of Old Norse literature, (often
In industrial contexts, "1758X" is part of a DEMKO ATEX certificate (DEMKO 16 ATEX 1758X) for . In the study of Old Norse literature, (often