Origin of the Rangefinder?

I read the theory about the origin of the rangefinder here Official rangefinder talk, and as I know this was not confirmed 100%. I searched the internet about headshells, cartridges and tonearms for turntables or phonographs to find some parts that match the rangefinder. I searched several sites and found these parts:

Thorens TD 150 II headshell:



The shape is similar to the rangefinder's shell. And this one is similar in other ways:

Thorens TD-145C headshell:



The AEU GP40 520 cartridge with needle has the basic shape of the rangefinder inner part:



And the rangefinder stalk is similar to these tonearms:

Pickering Fluxvalve Unipoise tonearm



Shure M16 tonearm



All of these parts are made before 1977 (I don't know the year of the AEU GP40 520 cartridge).

It is possible that Brian Archer (we know this thanks to Art who posted here Fett build history and found parts suppliers) who did the rangefinder really used full parts from phonographs or turntables or just made the rangefinder using those parts as reference. Maybe there is somebody who will find (or not) the original parts used (full or reference).

Respect!

If I'm not wrong the inner part is custom cut PERSPEX (an acrylic plastic) and the top of the rangefinder is fiberglass made. All was scratchbuilt as well as the separated peice of the right gauntlet. Anyway they could have been inspired in those parts, who knows?

Yes this has been brought up a few times, , Its the whole RF asembley is scratch built (not the pollaroid view finder of cause),