U-1942B: Japan

3 3/8" X 6 1/2" (86mm X 165mm)

 

(front skirt ink stamp) 

{with metal cap}

{Maker unknown}

 

Picture courtesy Bob Berry

3 3/8" X 5" (86mm X 127mm)

 

(front skirt ink stamp) 

{without metal cap}

{Maker unknown}

 

Picture courtesy Bob Berry

This is a dryspot insulator where the top unscrews to expose openings inside the skirt to allow a telephone drop wire to pass through the insulator to provide a "dry spot" from rain and decrease leakage loss.  The cap is made of steel.  

U number assignment by Bob Berry April 2016


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