Subscribe | UPI Odd Newsletter Subscribe Feb. 19 (UPI) -- A Pennsylvania man earned a Guinness World Records title for his collection of some unusual curiosities: slide charts. Harrisburg resident Dale Rupert said he started collecting slide charts -- handheld paper or plastic items that help with common calculations -- when he found a box of them for sale at a used bookstore in 2002. Advertisement "I pulled one up. I thought, 'Oh, that's sort of cool. I think I'll get that.' And as I thought further, I realized, 'Oh, I can get this whole box for under 10 bucks.' And that's when the collection began," he told WGAL-TV. Rupert said his collection of slide charts -- and their similar cousins, wheel charts -- now numbers 3,117. He earned the Guinness World Record for the largest collection of slide charts by submitting 1,111 eligible charts to be counted. Rupert's collection includes charts designed to convert measurements, track NFL football schedules and even a 1970 Miss Clairol chart for determining the proper formulas for hair coloring. "Somebody did all the math, did all the pre-calculations, printed it on this, and now I have those answers right here in my hand," he said. Advertisement Read More Bear moves into California crawlspace, relaxes by the pool Wandering sea lion rescued from California highway Deadly snake found inside family's washing machine
