For the tuning exam, RPTs perform a standardized piano tuning on a piano that has been master tuned. A master tuning is one that is performed by a group of technicians until they all agree no improvements on the tuning can be made.
In the tuning exam, RPTs use a standardized method for tuning pianos that have already been expertly tuned by a team of technicians. This process involves a collective effort where everyone agrees there are no more adjustments needed before declaring it a master tune.