This is a vintage Keuffel and Esser Beginner's Slide Rule, model 4058W. Manufactured from 1950's, the 10" Mannheim type slide rule was constructed on a wood frame with a celluloid overlay laminated ruled surface with a plastic curser.
The rule is in vintage condition with edge wear and finish wear. The cursor is still clear with minimal scratches. Include case which is worn and torn, as found, doesn't fully fit the ruler, likely not original. I'll include it because they have been together for years.
