What's a Gadget? It was the nickname of the implosion-design plutonium device that was detonated 35 miles southeast of Socorro, New Mexico. Trinity was the code name of the first detonation of the Manhattan Project in 1945.
This is a brand new sign with the following features:
12" x 12" screen printed on caution yellow
Glows in the dark
Sturdy .032 aluminum sign with rounded corners
Drilled hole for hanging
It features a picture of an atomic blast
implosion-design plutonium device