81 gauges covering 14mm through 22mm every 0.1mm. Each size engraved on the surface. Normally a diameter of 1.3 to 2.3 can be measured. (Comes with a rod and case)
HM-Style Tuning Cylinder, ¥35200
Shakuhachi Tuning Diagrams 12, ¥13200
16 Interior Diameter Gauge, ¥9900
HM-Style Tuning Set, ¥41800
Shakuhachi Tuning Diagram -Seiritsu, ¥1320