I have built a cryogenic precision thermometer with my arduino for my liquid nitrogen project http://homemadeliquidnitrogen.com. One of the features is to be able to toggle between Fahrenheit and Celcius. I can use a standard pushbutton. I have seen some simple thermometers that have a membrane, keypad-like button that one can push. Digikey sells surface mount buttons that toggle between a Normally Open and Closed state. I would have to find a cover for it.
Does anyone know where I can buy a single keypad-like button. It would already have a covering over it and it would have the necessary wiring. Basically, I'm looking for something a little fancier than a standard toggle or push-button.