Vintage machinist sine bar 5" x 1 ½ " no

Vintage machinist sine bar 5" x 1 ½ " no

This old sine bar is in fair condition. It has 9 threaded 1/4" holes on the top plate. Each side has three 3 threaded 1/4 " holes. The only thing I see wrong with this sine bar is the wear and small amount of rust around the threaded holes on each side.
The item being offered is from the estate of a machinist who retired 40 years ago. I am selling these items for a friend.