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I have inherited one of these. It seems to be a AW Faber 360 v2. Tbh i never really looked into how it's used but after reading some comments i might consider l

• kqr 6y ago
  It is incredibly useful in the kitchen still. That's the one place I'm actually surprised it isn't part of standard equipment. If you have a series of numbers you want to scale by a known fraction, you can just set the slide rule so that the numbers in the fraction are over and under each other, then leave it there and even a two-year old can read off scaled numbers like it's nobody's business. What does this have to do with the kitchen? The recipe calls for 50 g of butter, but you want to make as much as possible and you are constrained by owning 85 g of butter. Set slide rule to 85/50, then read all other ingredient amounts off the slide rule, scaled by the same amount.