TV7B/U Tube Tester. Serial # 4188.Dimensions are 15 1/2\" x 8 1/2\" x 6 1/4\". Net weight 20.2 lbs/9.2kg. Gross Shipping Weight 23.0 lbs/10.45kg.This is a very nice and clean TV7B/U Tube Tester. Made by Forway Industries Inc.Please take a look at pictures below. You can clearly see all the Test Buttons are so nice and clean. Not abuse. This unit has been calibrated recently and works very very well. No surprises here. Just plug and test unit. Seen here testing a Western Electric 205D Tube in excellent condition. Note : Tube in test is for demonstration purposes only and is not included in sale. As you can see in pictures below, this unit is  clean. Comes with original tube test data dated Jan 1957.Check my other sales for more old tube things. Thank You and Good Luck : ) : TV7B/U