Ameya Gupta (b May 17, 2005) of Delhi has a collection of 2,072 scales (including 1,890 duplicates) from countries like India, UAE, Japan, China, South Korea, Taiwan, Germany, Malaysia and Egypt as on June 30, 2015. They are made of different materials like aluminium, steel, wood, paper and plastic. The tallest scale is 6 ft (1.83 m) high and the smallest is just 3 inches (7.62 cm).