Neat! I’ve looked on amazon and eBay where I could buy a slide rule but haven’t been able to find one. One of my professors told the class that he had a teacher who would challenge any of his students to run any calculation on a handheld calculator before he could do it on a slide rule. The students could never beat him even with long complicated equations. Found that fascinating.
There's a 'Professor Herning' whose YouTube channel has both good tutorials on their use, as well as comparing many models (and the various scales they have):