B&K 747 Tube Tester, Top Line Manuals, Mutual Conductance, USA, NICE Black

Top line B&K 747 Dynamic Mutual Conductance tube tester, with comprehensive tube chart, supplemental tube chart booklet and original owners manual, extra fuse packets. All controls were cleaned and it was tested against another calibrated tube tester for accuracy. It is ready to use, very accurate. The Mutual Conductance tube testers are far more accurate and precise than the common Emissions tester. The Mutual Conductance testers test the tubes under a load for more accurate measurement.  It also has a Life Test where you can test the longevity of power tubes, very nice. It is in nice well cared for condition. It just has not been used very much, all the tube sockets are nice and tight, very very nice. It was B&Ks top line when made in the 1970s. It is easy to use and tests virtually all sound amplification tubes, 12ax7s, 12au7s, 6DJ8s, EL84/6BQ5s, 6V6, 6L6, 6550, 5AR4, 5V4, 7868, 100s of different models of tubes can be tested with the very extensive tube chart that is included with a substantial supplemental tube chart booklet and owners manual. It has a plastic case and has been well protected over the years, nice condition. One of the plastic tabs on the lid was broken so a simple sheet metal screw was added to support the lid-see pics. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good listening, SonnY :)