How And Why Move Emulsion Jets?

Bewy said
RRR,
The best description, with pictures, is in D. Vizard's Holley book, SA books #216. I believe $25 in the US, worth the money.

I thank you my friend for the advice. That said, I don't want advice too technical. I'm a simple man and speak in simple terms. Vizard does not. I don't need to get lost as I already am.