I carry a side rule. About two years ago, someone at work remarked that I probably don't have a slide rule. A quick trip to the car and back and he was very im

I carry a side rule. About two years ago, someone at work remarked that I probably don't have a slide rule. A quick trip to the car and back and he was very impressed. My Bomar MX100 calculator and my HP 12C. Love them!