Harold Frost

Harold Frost has been at the Thayer School of Engineering since 1981, teaching materials science, mechanics, and thermodynamics. He retains the sliderule he received at high-school graduation in 1964 (which still works) and the HP-35 “scientific” electronic calculator he purchased in 1972 (which no longer works). He joined the Oughtred Society (for collectors of slide rules and the like) in 1998.