Yes — that description is essentially correct. What you have is an antique butter-working table, sometimes called a butter worker or butter-working board.
🧈 What it was used for
Working/kneading freshly churned butter: The butter was placed on the sloped wooden surface.
Removing buttermilk and moisture: The fluted wooden roller was pushed back and forth across the butter, squeezing out excess liquid.
Adding salt: Salt could be worked evenly through the butter, helping preserve it.
Shaping the butter: Once worked, the butter could be formed into blocks or pats for storage or sale.
The sloping surface was practical because the expelled buttermilk and water could run toward the lower end rather than remaining around the butter.
🪵 Caring for an antique butter table
Because this is an old wooden object, less is more:
Dust with a soft, dry cloth.
If necessary, use a barely damp cloth, then dry immediately.
Don’t soak it or put it under running water.
Avoid bleach, abrasive cleaners, and modern furniture sprays.
If the wood is extremely dry, a suitable food-safe mineral oil or traditional beeswax treatment can be considered—but test a small inconspicuous area first.
If it’s valuable or has an original finish, avoid refinishing, sanding, or aggressive cleaning until its age and provenance have been assessed.
Today, these pieces make wonderful primitive-country decorative furniture—as a small side table, plant stand, kitchen display piece, or conversation piece.
If you have photos of the table and roller, I can also help you identify its approximate age, wood type, country/region of origin, and potential antique value.