Featured Anyone with some more knowledge about these items?

Hi.
I'm looking for more information on these.
Are these common in the market? What are they worth? ect ..

 

https://www.sphere.bc.ca/test/hemmi.html

check eBay sold listings for "Hemmi slide rules" - prices are all over the place depending on which ones you have.

 

Thanks for the answer.

 

I was in Engineering school about the time calculators came out and I used a Hemmi which I still have. Have a box full of slide rules as you can pick them up at estate sales for less than a dollar. Hoping to corner the market and they will be worth something someday.

 

they will have a comeback some day. when button cell prices are on the rise. but at the moment ? on the continent a new German or Swiss one for a tenner.