Wooster 7″ Acme Roller Frame

A "Wooster 7" Acme Roller Frame" is a painting instrument used to apply paint with a roller.

Here's what each part of the name represents:

"Wooster": This is the brand of the roller frame. Wooster is a well-known manufacturer of painting tools and supplies, known for their high quality and longevity.
"7"": This measurement refers to the width of the roller frame, indicating the size of the roller sleeve it can hold. In this example, it's designed to support a 7-inch-wide roller sleeve.
"Acme" refers to a type of thread widely employed in roller frames. It's a standardized thread size that works with a variety of roller sleeves and extension poles.