The Waltham Watch Company was an American watch manufacturer founded in 1850 in Waltham, Massachusetts. It was one of the first companies to produce watches using assembly line techniques, which allowed for mass production and greater accuracy. The company became known for its high-quality timepieces and played a significant role in the development of the American watch industry. Waltham watches were popular among both consumers and professionals, including railroad workers who relied on precise timekeeping. The company produced a wide range of watches, from pocket watches to wristwatches, until it ceased operations in 1957. Today, vintage Waltham watches are sought after by collectors.