0.1430" first hole diameter 1.2650" overall length holes in flange only; used on tgg coplanarity unit 22c-1 solid, external flange one end, internal flange one end
0.0140" first hole diameter 1.2650" overall length 4 holes 0.112-40 unc-2b thru flange- equally spaced; used on tgg coplanarity unit 22c solid, external flange one end