Frank wrote:
Hello!
Does someone know the device shown in the picture :

http://www.webalice.it/bruno.santalucia/UNK.JPG

I am searching for a: manual / data sheet / user manual.
On the labels is reported : PRD Electronic Inc. Type 219 ser.no.1743 and
Type 3302 ser.no.156.
Any help is wellcome.
TNX de I6FCR


Looks like a frequency meter to me, microwave.

73 DE Bob K6DDX