[Milsurplus] Guess what the AN/USS-2A is

[Mike Morrow]

Tom wrote:

>Gee, didn't know that polygraphs were used that long ago.

I guess there has always been a market for snake oil.

>Was this a polygraph in the modern sense of the word or
>a simple galvanic response tester?

It measured hand resistance (using a six-tube amplifier), blood
pressure/pulse, and respiration rate.  Results were displayed on three chart
recorder pens.  I'd guess that's about all the fancy ones do today.

73,
Mike / KK5F