Introduction of Vol. 3

• To Protect Clean Tap Water
• PIEZOELECTRIC ACCELEROMETER
• Rion's Eyes on The Future of Hearing Aids 2030
• Estimation of Hearing Age on the Basis of Averaged Hearing Thresholds Using A Hearing Checker
• The Challenge of Creating a Space of the Utmost Cleanliness
• Rion Across the Sea - Netherlands
• Strolls Around Kokubunji [Recharging Your Body and Mind in Kokubunji]
• Persist and Prevail

Cover Art: “Vibration Analyzer”

This handheld portable device is as small as it looks,but it’s used to take measurements of large machines. The range of different colors used in the print expresses the many functions of this compact product.