This tool works well on Yamaha, Kawai, Steinway and other pianos that have a spade end on the screw that adjusts letoff. The collar position can be adjusted with the set screw to gauge the depth to the screw for each piano, making it easier to find the spade end. Adjust the depth by putting the tool in position on a spade end at an action break, where the letoff screw can often be more easily seen.
Length of tool shown: a little over 7″
Shorter version without collar available upon request to use to set grand jack window height.