✅ SOLVED Easy id?

[BLACKIE555]

The ID is threaded.humph?

 

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[Fourman110]

End of a pull down rod. Like pulling down a school projector screen or shade..

 

[unclemac]

yep, every classroom had one of those in the old red brick school houses. They fit in brass receptacles at the top of double hung windows so you could open windows from the top to let the hot air (hot air rises) out.

 

[unclemac]

like these...

 

[BLACKIE555]

like these...

Excellent thanks....I was way off base.