Brush up on your slide rule skills with this nice refresher https://sliderulemuseum.com/SR_Class/OS-ISRM_SlideRuleSeminar.pdf "Dad says that anyone who can't use a slide rule is a cultural illiterate and should not be allowed to vote. Mine is a beauty - a K&E 20-inch Log-log Duplex Decitrig" - Have Space Suit - Will Travel, 1958. by Robert A. Heinlein (1907-1988)
