India Book of Records felicitates its Top 100 Record Holders on an Award Night held in Bhopal on March 15, 2019.

HANDMADE POCKET STETHOSCOPE

HANDMADE POCKET STETHOSCOPE

HANDMADE POCKET STETHOSCOPE

Dr. Dhaval Makwana (born on January 8, 1989) of Jamnagar, Gujarat, made 28.5inch long handmade functional binaural stethoscope that helps to examine blood pressure, heart rate, and respiration rate, on February 12, 2016.