Vintage RAF Air Ministry 10J/13003 and 10j/28 Torsional Flexible Drive Cable Shaft NOS

From house clearance, i don't know much about them, but Google ai says the following for 10j/13003

Under the Air Ministry / RAF Stores Vocabulary, the 10J prefix stands specifically for "Radio Remote Controls".This exact flexible drive cable was used to mechanically hook up remote control boxes to the primary ground radar receivers, early warning tracking systems, and long-range military wireless transmitters used by the British Armed Forces during the Cold War.The Specific SetupIn vintage military radar trailers, command bunkers, and signal cabins, large radio gear could not be placed directly on the operator's desk because it was too massive and generated heavy heat and electrical noise.The large main tuning receiver units were bolted into vertical equipment racks meters away. The operator sat at a console featuring a smaller controller unit (such as the famous RAF Control Unit Type 3 or Type 4 series).How This Cable Was UtilizedThe Link: One end of this cable screwed into the back of the operator's desktop tuning dial. The other end snaked through the back of the desk and plugged into the main remote receiver rack.The Mechanism: When the radar operator turned the tuning knob to track an incoming frequency or adjust an aerial sweep, the inner square core turned instantly. It physically spun the internal variable capacitors, rotary wave-meters, or tuning coils hidden inside the remote equipment bay.System MatchesCables matching this era and spec (Type G series) were commonly integrated with heavy-duty British defense networks, including:AMES (Air Ministry Experimental Station) Ground Radars: Used in radar installations like Type 7, Type 11, or Type 14 mobile and fixed tracking arrays.Marconi & Decca Ground Systems: Integrated into the tactical interception control cabins used by the RAF to coordinate fighter responses.It is quite literally the physical "link" that allowed a Cold War radar operator to tune in signals from a remote workstation.