Curta mechanical pocket calculator - photos

[mklotz]

For folks too young to remember "slip sticks", there are numerous emulators on the interweb, such as this simple one...

http://nsg.upor.net/slide/

or you can build your own, or choose from a list of old-time favorites like the K&E log-log, deci-trig, my old pal...

http://nsg.upor.net/slide/sryae.htm

This one looks like the Pickett, and has a movable cursor...

Virtual Pickett N909-ES SIMPLEX TRIG RULE with METRIC CONVERSION Slide Rule

Detailed instructions on how to use one...

http://www.sliderulemuseum.com/SR_Course.htm

I took a physical chemistry course that involved endless problems with variables that ranged over ten or twenty orders of magnitude. I would have killed for a digital calculator.