Through the correspondence below, Giordano Boetti and Alessandro Cucchi undertook the initiative to obtain official recognition of the new unit of measurement devised by the Maestro Enzo Cucchi: the NU (equivalent to 330 cm, or the length total length of the edition) at the body in charge of certifying the units of measurement.This epistolary exchange gradually evolved into a compendium of information pertaining to measurement and related units, and took on the role of a press release during the presentation of the edition.