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Thursday's Thread WRUW?

Jet Jetski

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1960s Ramona Auto with a 30j Felsa 4000 today.

I’ve never been able to determine which, if either, of the two most likely candidates, Aureole or Beltex, made this particular example and now getting the toothy trio’s 1964 warblings out of my head is proving equally difficult.


Ramona 2019 v.2.jpg

Ramona Felsa 4000 2 v.2.jpg

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1 hour ago, Turpinr said:

Annual calibration? 

We got a Bowers gauge where I used to work and it never gave the same reading as the internal mike at sizes from about 70 mm up to 200 mm

This is what ours looked like.

i think we had 8 interchangeable heads from 70-200 but as I said, they never read the same as the inside mikes by .002" or so but a lot less fuss to use.

Pull the trigger, put the Bowers in the bore and release.


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