Westinghouse 1B32 spark gap tube. This measures 75x27mm. Also marked 532A. It is fairly heavy for its size. It is a T/R Cell but with no keep-alive electrode, and was used in the AN/TPS-2 radar circa 1946.
The box, not pictured here as it is hard to read, shows:
This file was last modified
15:57:43, Tuesday September 02, 2014