The Regulating Rack Template Set includes template lengths in quarter-inch increments from 5.75" to 10.5" and in half-inch increments from 11.0" to 17.5".  There are 30 templates in all and they come with a container adapted to hold them.  Once templates have been selected to match the sections of a grand action, they are set up on a Regulating Rack to provide the profile of string heights along the strike line. This set is included with the purchase of a Regulating Rack.