Circular Slide Rule
This is my Circular Slider Rule which I learned to use in 8th grade. My teacher got one as we were learning to use the straight kind, and once I saw his, I had to get my own. "Radio Shack," he told me when I asked where he got his. Later, in science classes, and especially Chemistry, this guy was carried in my pocket, so yes, I was considered a "Geek" back in my high school days!
Circular Slide Rule
This is my Circular Slider Rule which I learned to use in 8th grade. My teacher got one as we were learning to use the straight kind, and once I saw his, I had to get my own. "Radio Shack," he told me when I asked where he got his. Later, in science classes, and especially Chemistry, this guy was carried in my pocket, so yes, I was considered a "Geek" back in my high school days!