New SUN Vintage (Pre-1963, no zip code) Transistor Voltage Regulator Tester Model #TRT-12.

The metal box has slight storage wear.
The unit has never been used and is in like new condition.
Use it or a great display item.

$90 plus $15.75 USPS priority mail shipping.
Payment by USPS money order.

 

Why you show me this right after I've paid car and house insurance and property taxes?!😭

Oh, you're cruel...

 

Price reduced.

 

By chance is there a manual on how to use it?

 

Originally yes, but long gone. It also had 2-3 more test leads.
I had 2 of these but sold the complete one a few years ago on Ebay for much more than the listed price.

 

Aren’t transitors ancient alien technology that was copied from the Roswell incident recovery?