Angelus late 40’s circa steel 45 minute recording chronograph c.215 This watch was worn during the first above ground atomic detonation testing in Nevada early 1950s.
The Angelus chronograph pictured was worn during the first above ground nuclear device testing at the Nevada Proving Grounds in the early 1950.
The images were taken by the individual wearing the chronograph used to establish communications during the testing at the proving grounds.