[dieselerator]

That is interesting.

I have an IBM Selectric that I purchased at a thrift store. It is a marvel engineering. It was too much to resist. I have not used it, but I tried it out. It works. It really is a fine machine. I think I will spin it up and exercise it.

I wonder if one of those dance type balls is available any where. I suppose not, but it would be fun to try it out.

[chiph]

One of the interesting things about the Selectric is that it contains a mechanical digital-to-analog converter .. a Whiffletree mechanism.

https://www.youtube.com/watch?v=bRCNenhcvpw