W.M ZIEGLER Floating Tapping Head Tool Holder Collet Mill Chuck 1/2" 13 & 20 TAP

Description

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Here we have a
Very Nice used
Floating head Tap holder equipped with a collet for holding 1/2"-13 and 1/2"-20 taps.
This type of floating head helps to automatically align your tap or other tool etc to center if your spindle center is not perfectly aligned with the center of your hole to be machined when it plunges downward.
This one is Not a tension compression style holder.
The collet is for holding a 1/2" bolt thread tap with a .366" diameter round shank or close to that. This will not hold a 1/2" NPT pipe tap
Made by W.M. Ziegler Co. Detroit Michigan
The hole in the end of the collet is about .368" diameter
I think the collet is a Model 1LX-381C or similar
Overall length of the collet is 1"
The end measures .393" square
The outside diameter of the round end is about .630"
The body diameter between the 2 ends measures .499"
The holder is 5-3/4" Long and has 1-1/16"-12 TPI right hand acme threads
Largest outside body diameter is 1.812"
The hole in the end of the nut is .465"
Equipped with a 3/16" wide half moon drive key
and the threaded adjustment nut.
Stock photo but it is identical, and it is nicer
and newer looking than the one in the photo.