Vintage Marine Engine Valve & Propeller Motion Demonstrator by Clarence E. Long bike path AB - 103868 - 072921

AB - 103868 - 072921

Vintage cast iron laundry wringer

Features worn gold filigree

The item itself and info card are both in good condition

Vintage Marine Engine Valve & Propeller Motion Demonstrator by Clarence E. Long bike path AB - 103868 - 072921c. 1930s; Clarence E. Long Marine Engineering School Milwaukee, Wisconsin Mechanical marine engineering demonstrator constructed as an instructional display to illustrate the relationship between propeller rotation and internal valve or linkage motion. Mounted on a painted wooden backboard with integrated base and carry handle, the piece features a brass and steel linkage assembly connected to a small metal propeller. Turning the propeller drives the