Some Sort of Small Drill and Taps

[FireFlowerPower]

I have 2 old manual hand drills but I dont know what they would be used for.
by the looks of the base they clamped on to somthing.
The handles have a tap on one end and a flat screw driver head on the other.
As you can see from the images one still has the drill in it and can be set to drill to different depths.

I'm wondering what they would be used for.

 

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[hunterV3]

Looks like some kind of antique hand re-loader for rifle/pistol cartridges. The drill bit and tap may not be original or it was used for something else. It looks like the base would hold a shell nicely and the collars could be adjusted for different bullet/case combos.

 

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[JamesE]

Looks close enough for me. Could be one of those complicated arrangement that was replaced by a simpler arbor press or the modern versions.
The upper looks as if could be a primer or bullet setter in this context. jim