Convert from Paris foot to iron

Unit Definition (Paris foot)
The Paris foot is an English name for the French royal foot (pied de roi).

Unit Definition (iron)
The iron is a traditional unit measuring the thickness of leather used in making shoes, especially the soles of the shoes. One iron is equal to 1/48 inch (0.5292 millimeter), so a sole 1/4 inch thick is described as "12 iron".