One scientist explained that the larger spheres “were the product of the finest craftsmen, and [the spheres] were so nearly perfect that the tape and plumb - bob measurements of diameters did not reveal imperfections. ”
८०० के आस - पास बनी सोने की चीज़ों से इसका सबूत मिलता है कि उन लोगों को तेज़ भट्टी में काम करने का अनुभव था ।