Nathan's Possibly Interesting web site
A portfolio type for featuring items in your portfolio.
Two pinwheel calculators compared
Made by one smart water engineer!
Tavernier-Gravet’s evolving slide rule technology
IBM pluggable units
A personal history of stainless cutlery
A human connection across time and space
Serving the Royal Italian air force
Light metering, 19th century style
A carry mechanism with no gears!
A most unusual circular slide rule
