#56 Two first-class seats aboard a TWA jet from London to Washington, one occupied by a caesium beam timepiece accurate to one-millioneth of a second used in the USA’s space programme. Date unspecified.

Soaring to New Heights: Air Travel in the 1960s.

#56 Two first-class seats aboard a TWA jet from London to Washington, one occupied by a caesium beam timepiece accurate to one-millioneth of a second used in the USA’s space programme. Date unspecified.

Vehicles & Transportation