Comment by ghaff
2 months 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.
2 months 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.
Somewhere I have a circular one for flight calculations that you velcro to the knee of your trousers.