Helpful tool for measuring string height on a grand piano in order to regulate the action on your workbench. This tool is also able to take grand damper measurements for the purpose of regulating the damper height. The 3rd use of this tool is to check over centering of the hammers.
Base measures 3" by 1-1/2" and closed height is 6 5/8 inches. Here is a link to the instruction page for this tool: String Height Gauge Instructions
