Muhammad Salih Thattvi

Muhammad Salih Thattvi was a seventeenth-century Mughal metallurgist, astronomer and craftsman from Thatta in Sindh, active at the Mughal court in the mid-seventeenth century. He cast seamless celestial globes by the lost-wax process, following a technique pioneered in Kashmir in 1589–1590.

His globe of AH 1070 (1659–1660), twenty-one centimetres across with silver dots marking about 1018 stars, is in Delhi's Red Fort Museum; another of 1663–1664 in the Khalili Collection carries Arabic and Sanskrit inscriptions. He also made at least four astrolabes dated between 1661 and 1667.