Vintage Western Electric Hickok KS-15874-L2 Tube Tester Untested Read!!!!!!

Description

This was found in a garage that I bought all the contents of
The person who owned the shelves and shelves of tubes and tube testers and electronics
I’m assuming he did this for a living
I plugged it in and it powered on immediately, and I pushed the buttons and things lit up
It says that it was recalibrated 2006
I cannot guarantee that because I do not know how to test it
You were buying this untested and as is
No returns
The outside case has some scratches on it, but the actual tester looks really good