Maybe someone can help me, I'm making a watch case for a 0 size Waltham seaside model 1891 movement, I'm ready to make the tube for the winding sleeve, but I have no idea what thread it is. the major diameter of the thread on the sleeve is .1537 inches, or 3.905mm. The TPI from what I can see using a thread count gauge is 64, the pitch is .0151 inches, or .385mm which works out to 66 TPI. I don't get it. Does anyone know? Thanks Dano.