i got to see my great grandpa's slide rule one of the trips to Mo this year, with the leather case.
he was an electrician in St Louis a long time ago and all my family says he used it alot. my dad has a good idea how to use one, but it looked completely foreign to me.
he was an electrician in St Louis a long time ago and all my family says he used it alot. my dad has a good idea how to use one, but it looked completely foreign to me.