Fluke Corporation is a manufacturer of industrial test, measurement and diagnostic equipment, including electronic test equipment. Founded in 1948 and now a subsidiary of Fortive, the company was founded by John Fluke, who was a friend and roommate of David Packard, future co-founder of Hewlett-Packard, when both were employed at General Electric. Fluke is now a global corporation and a member of the S&P 500.

ISS provides the full range of products developed by Fluke.