Ken Becker said: >Sue, I am so glad I was not the only one with the sliderule AND morse code. Before we assign the slide rule to a place among the Dodo Birds and the Dinosaurs, let me tell you about a recent appointment my husband had with his neurologist. We were there for him to perform a test to determine the degree of muscle response to electrical stimulation. This was a diagnostic tool to help determine if spinal surgery was called for. After recording the results, the neuro consulted some tables, then whipped out his trusty slide rule and produced the necessary calculations with the same speed as any nerdy young whippersnapper could with a calculator! I hasten to add that this neuro is up to date in all other aspects of his profession. I haven't used one since I used to prepare grades with a slide rule in the days BC (before calculators and computers.) Martha Rohrer [log in to unmask]