Yes really, if your job requires lots of calculations you’d be stupid not to have one, even back when they were expensive.
Every machinist I know, even the crusty old ones, carry a calculator in their pocket. It’s indispensable. Why wouldn’t you carry one if you need it all the time?
Not really. The first ones were quite expensive, and it was uncommon to have one on your person at all times like we now do with smartphones.
Yes really, if your job requires lots of calculations you’d be stupid not to have one, even back when they were expensive.
Every machinist I know, even the crusty old ones, carry a calculator in their pocket. It’s indispensable. Why wouldn’t you carry one if you need it all the time?