The purpose of this document is to determine the optical, mechanical and radioactivity characteris ics of radioluminescent deposits attached to time instruments, as well as the related test methods.
NF S86-305:2014 history
2014NF S86-305:2014 Horology - Radioluminescent time measuring instruments
1996NF S86-305:1996 Horology. Radioluminescent time measuring instruments.