Starrett No. 177A 2-3/4" STEEL PLUMB BOB Made in Poland This industrial quality chuck

This industrial quality chuck

This is a very rare super high quality tool

The adapter causes the jaws of the collet to close down

Very effective for hollowing

)  CAT 40 E 750 3/4" Long end mill HOLDER  for Milling Mill C40E750L

Starrett No. 177A 2-3/4" STEEL PLUMB BOB Made in Poland This industrial quality chuckThe 177A steel 2 3 4 oz. plumb bob is used to achieve precise accuracy in all layout work, construction and surveying. Solid steel construction provides a low center of gravity and great weight in proportion to their short length and small diameter. Starrett's best 2 3 4 oz. steel 177A plumb bob is used to achieve precise accuracy in all layout work, construction and surveying Solid steel construction provides a low center of gravity and great weight