Oh, absolutely! Still have mine in my desk drawer for any long-chained calculations. The Deci-Lon was the absolute GOAT in both its long and short forms.
IMHO the only slide rule that was consistently better was the Faber-Castell 2/83N.
You use a click eraser or a normal block eraser.
Only filthy casuals suffer one at the end of the pencil.
.5mm or .3mm for me, the only place I use a .7mm or a .9mm is with woodworking.
No K&E either. Which for any draftsperson, ex or current, is a heretical omission.
I find myself inordinately amused by the unsolicited vitriol of your comment. Sounds like you have a lot to unpack with that particular model.
The fact that Rotring, Staedtler, Faber-Castell, and K&E mechanical pencils are missing is deeply troubling.
I also have an emotional thing for the Pentel P200 series, and the Pentel Techniclick in black has been my absolute personal favourite for light-duty scribbling and note-taking/math since the 90s.
So how long until the first underground railroads for young women are set up?
I mean, I am already talking with American LGBQT about being on the Canadian side to receive them. But it looks like we’ll need to set one up for women, as well.