The Techni-Quadron, similar to the Quadron, had a rectangular face and was released in 1928. These Gruen vintage watches had two dials. The top dial had the hour/minute hands while the bottom dial, nearly as big as the top dial, only had the second hand.The seconds dial on the Techni-Quadron watch was so big, so that it could be used to measure the pulse of a person and hence, these watches were known as "doctor's watches". However, the popularity of the watches also extended to the engineers...
Read Full Story