System X circuitboards and components, contained in four large wooden boxes System X circuitboards and components
Nine large circuitboards possibly Pathfinder/PCM, in box ex-Martlesham Nine large circuitboards possibly Pathfinder/PCM
Nine printed circuit boards as used on TSR2 aircraft, illustrating discrete component technology of 1962/63 Nine printed circuit boards as used on TSR2 aircraft 1962-1963