[4] In 1911, Leupold & Voelpel was contracted by John Cyprian (J.C.) Stevens to manufacture a water level recorder he had designed and patented.

Surveying equipment, rifle scopes, and related products are sold under the "Leupold" name, while water monitoring instrumentation, such as level and flow recorders, are marketed under the "Stevens" brand.

[3][4] Other ventures include Biamp Systems (1985–1986), makers of sound equipment, and Fabmark (1984–1990), a sheet metal fabrication division that serviced high technology companies.

[7] In 2002, Leupold & Stevens won a Wausau Insurance Gold Award for workplace safety at the company's factory.

[3] In 2008, Leupold & Stevens purchased Redfield Optics along with its brand name and all intellectual property rights.

[1] In late 2010, a Portland Business Journal article gave the company's annual revenue as approximately $160 million, citing Reference.com for the estimate.