Comment by rdiddly
15 hours ago
You almost have to do this, or buy a used one at a markup, as nobody seems to make them anymore (except circular ones).
15 hours ago
You almost have to do this, or buy a used one at a markup, as nobody seems to make them anymore (except circular ones).
Still available in Germany („Rechenschieber“), eg https://www.wissenladen.de/products/der-rechenschieber
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