17th Century Islamic Brass Superior to European

A study by archaeometallurgists has determined that 17th century brass astrolabes constructed by Indian artisans were centuries ahead of their European counterparts.

The engineering study, conducted over a four-year period, found that the higher zinc content of astrolabes, built in the Lahore area of 17th century India (now Pakistan), shows that metallurgical techniques used were comparable to those used by Europeans in the 19th century.