Apparently Nautilus stopped making professional gym equipment many years ago:
https://www.wikipedia.org/wiki/BowFlex,_Inc.
History
Nautilus, Inc. originated in 1986 with the sale of most of the company by the inventor of Nautilus machines, Arthur Jones.[11] Jones created the Nautilus machine, then called the Blue Monster, in the late 1960s, with the purpose of developing a fitness machine that accommodates human movement.[11] The company's name was changed to Nautilus because the logarithmic-spiral cam, which made the machine a success, resembled a nautilus.[11]
BowFlex acquired Nautilus, Inc. and specialized in designing, developing and marketing strength and cardio fitness products.[6][dead link] In 1998, the company changed its name to Direct Focus and acquired the Nautilus, Schwinn and StairMaster brands between 1999 and 2002, before eventually changing its name to Nautilus, Inc. in 2005.[6][dead link] Nautilus became a publicly traded company on the U.S. stock exchange in May 1999.[12]
The company stopped selling exercise equipment to gyms in 2011 and shifted its focus to home-use equipment. The same year, Nautilus. licensed its brand name and technology to other manufacturers.[6][dead link]
