Taxidermyman . I think you nailed it!

Looking for info on what these could have belonged to. The male thread is 1/2-13 , the knob is approx 1-1/2" in diameter . The knob has a brass insert with a 3/8-24 female thread .

Im pretty sure this is used to show how pascals law works in a school experiment, I found one at UofT once

Estate sale garage find that came with an assortment of other tools.  No markings at all.  Chrome plated about 14" long.  The chrome ball at the end is about three inches across and covered with removable nozzles or sprayheads.  Can't get the handle assembly disassembled but it appears to be a plunger assembly that you push to distribute the contents inside the ball assembly through the nozzles.  Would have to be an extremely fine powder or liquid to be able to push it through the nozzles.  Anyone have any ideas what this is.  Thanks in advance.

Here is my Mephisto auger bit.
-Don

Very nice set of bits!!

sweet! I wish estate sales near me had more cool tools but its always some junk like ikea branded stuff 

Glass cutting bits is right, I use these often at work. They usually have some sort of carbide tip

I bought these Mephisto Plumbers Auger Bits at a recent estate sale. 

The catalog screen shot is from the October 1, 1938 Mephisto Price Guide.

The previous owner was a plumber and also did home restorations.

Defiantly not masonry, maybe tile / glass
The edges of the blades are sharp enough to make me wonder