Nathan's Possibly Interesting web site
A portfolio type for featuring items in your portfolio.
A forgotten storage technology
An ingenious way of calculating with sticks
A tool from the time of Napoleon
An unusual but sensible choice
Very nicely made!
A Gerber Variable Scale clone
All four of them!
The Arnault-Paineau calculator
Well, not exactly a slide rule…
Jean-Antoine Lafay’s Hélice a Calcul
