Just thought of where to find. There are three styles.

I called it a tracing wheel. Try estate sales, Goodwill, or yard sales.

Hi I am sorry but I dont know which bit of the world your in but on UK Ebay there is a wide selection. Happy hunting

I still own some. Haven't sewn any clothing for years but still have the gadget I used in those days.

They are called tracing wheels and Joanne Fabrics still sell them!

Definitely called tracing wheels ,Just look in the haberdashery section of a fabric shop.Still have mine & it is about 50yrs old.

I have also had one for years. Used to use it with coloured paper, like a carbon paper for marking dress patterns.

I have 2 if we are talking of the same thing--it holds chalk and has a little toothed gear that rolls and marks things. I usually use white chalk or blue---the blue I will say doesn't come out of fabric as well as white but then again I don't launder tote bags and things like that I quilt a lot. I think they are made by 'Clover' or 'Dritz' company.I do have the old tracing wheels we used to use with tracing colored paper for garment making.