Thank you for the advice on thread technicalities. Obviously that is "too much sand for my truck". If this were the case, which is not, i would rather visit a turner workshop and ask them to ID this thread pitch with a measuring tool.
Indeed the thread interior looks modern, even shinny, and so is the bottom of the object, but both have certainly been screwd in place for long, hence safe from oxidation. The exterior is visibly well patinated.
Slippery it would not be if, as Tim suggests, this was in the the inner side of a door with a larger outer knob. Or, who knows, one of many fix decorations of a mannor house door.
Agh .,.. forget it.
.
|