Two Brass poss.bronze (largeknob)......salvage items for your consideration......one most certainly industrial.......i'm posting wide time frames because the items really have no provenance.....so 1875-1925 seems realistic.........this an previous post......in the world of project creation.....theres a place for every high quality object......THANKS......W.   L.ball 1 lb 1.3 oz     S.sphere  8.1 oz.    thread appears to be either 1/8 -24......or 1/8th  32.....threads per inch.....