3 ms·

There were also all manner of specialty "slide rule" calculators of various kinds for special purposes. I used to have a bunch of them especially from the oil b

by ghaff 1y ago

There were also all manner of specialty "slide rule" calculators of various kinds for special purposes. I used to have a bunch of them especially from the oil business. Don't know if I still have any at this point.

ErroneousBosh 1y ago
Somewhere I have a circular one for flight calculations that you velcro to the knee of your trousers.