The following old B&K CRT tester is offered for sale.
Asking $15 plus shipping (approx 12 lbs packed) to a US address
from 07042. Thanks for looking.

-Al Schapira, KC2HRH,

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B&K Model 440 CRT Cathode Rejuvenator Tester, in black fabric covered
wooden box, approx 14 x 8 x 5, 10 lbs. Case is slightly faded and
worn at the corners. Inside is clean and fairly good condition.
Has tube tester type meter with Good/Bad and numeric scales.
Functionality unknown, no manual. Includes two umbilical cords with
seven adapters for various CRT bases. Includes original instruction
card inside cover. I believe that this was used by TV shops to
test and "rejuvenate", i.e. brighten, old picture tubes.
Untested, as is.
Pictures at
http://home.att.net/~a.schapira/pix/BK440/pict0002.jpg
http://home.att.net/~a.schapira/pix/BK440/pict0003.jpg
http://home.att.net/~a.schapira/pix/BK440/pict0004.jpg
http://home.att.net/~a.schapira/pix/BK440/pict0005.jpg
http://home.att.net/~a.schapira/pix/BK440/pict0006.jpg
http://home.att.net/~a.schapira/pix/BK440/pict0007.jpg