the lens I though was broken then I thought wasn't, was : ( turns out it focuses up close but not at a distance. now I remember. I'm going to take it apart to show Brooks and Miles.
Is it an old vintage lens , your helicoid thread may just need screwing in correctly or you may need another spacer ( looks like a washer ) in between components
@phil_howcroft just a nifty 50 Nikon. Had already replaced it. It's for my crop sensor and very inexpensive in the realm of lenses. A great little lens though when working correctly😉
