Latest thing found in barn

[Muddyboots]

+1 battery tester

 

[cornshank]

+1 battery tester

I think I found it on line, looks like hippie eara
Stuff?
I typed in ( odd things that hippies used), and this came up.

 

[lyle2231]

I think I found it on line, looks like hippie eara
Stuff?
I typed in ( odd things that hippies used), and this came up.
View attachment 370689

Yep, Edmund Scientific Company all the way!

 

[Rosebud]

Hope you don't start snoopy around minute man missile silos.