A Western Electric KS-15750-L2 Type Tube Tester.  Serial #486.Dimensions are 16 1/2\" x 18 1/2\" x 7\".  Net Weight 29.5 lbs/13.4kg.  Gross Shipping Weight 32.5 lbs/14.77kg.This is an excellent working condition tube tester.  It was calibrated less than a year ago when I purchased it.  To be absolutely sure it stays calibrated and good, I have it calibrated again.
No Problems found or detected.  This tube tester works like a gem.It can test many popular Western Electric Tubes like the 101\'s, 205D\'s, 274A,B, 300A,B, 310A,B, 348A, 349A, 350A,B and more.And of course test the ever popular Output Tubes like 6L6, 6CA7/EL34, KT88/6550, 7591 and more.
And also test the 12AT7, 12AU7, 12AX7 types as well as 6SN7\'s and more.Comes with an Original Operating Instruction Manual.
Also has a copy of Instruction Manual with more Tube Data on it.The old ac cord was worn and brittle so it was replaced with a modern 3 prong ac cord.Outside metal case has a huge paint loss and scratches here and there.  Many pictures shown so you can clearly see.
The Inside is very clean.Thank You and Good Luck : ) : )
WE KS-15750-L2 TUBE TESTER