B&K 747 Solid State Tube Tester
Checks all of the octal and later type power tubes and is able to check double triodes
Measures mutual transconductance
Meter has bad-?-good scale. It is also calibrated in percent of rated transconductance
Measures grid leakage and shorts with meter
Tests octal, 7 & 9 pin minature, 9 & 12 pin compactron tubes
Includes instruction manual and set-up book
This solid state tube tester came to us from a film industry collector.