Two stage rotary on a spike Melnor was founded in the USA in 1946, two years later the first innovative Melnor oscillating sprinkler was introduced. While there have certainly been changes through the years, there has never been a change to our committment to offer new & innovative ways for the home gardener to maintain lush yd & bountiful gardens. For more than sixty-years, Melnor has been a trusted partner to retailers & homeowners