What is it?

[Sawdust Man]

looks like old-skool jet pump parts, kinda works like the stack impeller plate thing on a shop vac

Yep..... pump guts.

 

[Sawdust Man]

View attachment 488337

Them are really nice ones!......what are they?

 

[Sawdust Man]

Looks like a tool that can be used on model airplanes to create rivet lines. I am sure there are other applications, maybe even perforation lines on something.

View attachment 488295

Those are lather working tools, specifically the roller ends are stich markers that you trace along a pattern for a certain # stitch count. Ive also seen them used to transfer a chalk pattern to a soft material or fabric.

The larger wheel might be a perf cutter for leather as it kind-a looks sharpened, but I have never seen such an animal nor can I think of a reason to perf cut leather......just a bigger space stich count IMO

They're very light weight aluminum, (about like an exacto knife), maybe kinda light duty for leather work? but......Idk nothin.