Here's an oldie :surprised:

[Bill Ladd]

I posted this pic along time ago, & always wondered about it. Recently I found out this same picture & detector was in one of those "science" magazines for a "build it yourself" detector. It was in the 30's & after Dr. Fisher was making his....
Wonder what's behind that sheet?

 

[Tony (NC)]

n/t

 

[Bill Ladd]

Man, detectors have come a long way! Imagine swinging that unbalanced thing all day?
That's as heavy as one a them Aussie detectors

 

[Tony (NC)]

Some CLOWN probably designed that thing on his dining room table

 

[BuckeyeBrad]

n/t

 

[Bill Ladd]

n/t

 

[Anonymous]

n/t