Circular Slide Rules: Faber Castell 8/10 + Sama & Etani Model 90

Описание к видео Circular Slide Rules: Faber Castell 8/10 + Sama & Etani Model 90

I take a look at a couple circular slide rules and discuss some pros and cons. There are a few errors:
- The Gilson "binary" slide rules are thus named for having a scale of binary fractions (denominators that are powers of 2), not for have the double, caliper-style cursor.
- The A and B scales on this 8/10 are divided identically. I thought I had noticed a difference before, but now I don't see it.
- I call the 4181-1 a 4181-3 by mistake.

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