Bought a used SPECO ocilloscope - worth keeping?

[JoeG]

I was in a thrift store that happened to have a SPECO Model FS-4820 Oscilloscope for sale. The woman running the shop said "I have no idea what it is. But the price is $5." I told my wife about it during dinner out, and she said that I should buy it even though it has only a power cord, and I know zero about how to operate it. So for $5, I made a donation (in my opinion).


   


In searching the internet for information about it, I found out that it's identical to the AWS Model 620C oscilloscope. So I downloaded that manual for that brand and model.


   


Does anyone know if this unit is worth plugging and testing without any accessories such as probes?

Thank you!

Joe