When I first saw this I thought it was some kind of early fax machine where results of the calculation could be transmitted over the phone. But it appears to be a multiplying calculator. The dial evidently controls how a number is multiplied. 

I haven't tried it yet. Sound like I need a ream of it.

In reading some writers who used typewriters during the Golden Age of typewriting (30's to 70's) I've read that several favored yellow typing paper. I'm not sure if it was for aesthetics or to ease eye strain, or if it was the equivalent of the ubiquitous yellow legal pad. So, in the spirit of keeping vintage things vintage, I am thinking about investing in some canary yellow copy paper. Is there a specific color you prefer in your pewrotten work?

I have the chance to buy either a restored IBM Selectric III or a Wheelwriter 2. What's the best choice? I learned on a Selectic and I've tried the Wheelwriters when they were new years ago. It seemed to me the Wheelwriter had somewhat less sure key action, especially with the space bar. It seemed it would hit extra spaces when I only needed one! Maybe that was me needing to get used to it. It would be used for writing occasional letters and fiction drafts. Any thoughts welcome.