 The company now focuses more on the do-it-yourself consumer, but at one time made professional construction-grade power tools, which are now being sold under their subsidiary, SKILSAW.SKIL can trace its heritage to the invention of the circular saw by Edmond Michele in 1924, which led to the development of the SKILSAW circular saw "Model 77" in 1937.Now referred to as “the saw that built America,” the "Model 77" set the industry standard for handheld worm-drive circular saws which remains in production almost unchanged today.