What is this Tool?

[James AParticipant @jamesalford67616]

Does anyone know what this tool is? It appears to be a very fine grindstone, but for what job particularly?

 

James

[not done it yetParticipant @notdoneityet]

Are you sure it is not made of Carbon?  If it is, it’s possibly a marver for use by those shaping melted glass items.

[James AParticipant @jamesalford67616]

It could be carbon: it seems quite soft. Is there a simple way to confirm whether it is carbon?

I shall look up marvers as I have not come across these.

James

[peak4Participant @peak4]

It looks similar to one of these “Carborundum” sharpening stones; does it say that in those letters around the brass ferule?
(I can only see the CA & M)

https://archive.org/details/hardware-age-merchandise-dir-vol-146-no-2-jul-25-1940/page/44/mode/2up?q=carborundum

https://www.etsy.com/listing/1112073729/vintage-1930s-carborundum-no66-knife

https://www.worthpoint.com/worthopedia/antique-carborundum-knife-sharpener-481582775

Knife & Tool Sharpening Stone with Handle ~ Fine

Bill

[MacolmParticipant @macolm]

Sharpening stone (depending on size) for scythe, sickle, sword, or large knife.

[Nigel Graham 2Participant @nigelgraham2]

Point Five on the display card:

Stops every housewife…

From what, one wonders.

 

This specimen looks as if hardly used, or was perhaps used in a kitchen so kept clean; so still perfectly serviceable.

[Author]

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