Knobs needed for 20" x 24" saunders printing easel

[Paulaberliner]

I have a mint condition Saunders 20" x 24" printing easel that I want to sell. The knobs have disappeared.
I would appreciate it if anyone could tell me where to get the 4 original knobs that have the name
Saunders on them.

[Keith Pitman]

Take it to a good hardware store; they will likely have knobs to match.