Stamped in black ink on the large standoffs on the bottom of the module.
overall: 2 3/4 in x 3 3/4 in x 3 3/4 in
This record contains one electron beam module. There are three ceramic standoffs at the bottom of the module which act as stands. There is a circular metal component attached to the top of these standoffs with screws. There are two square metal plates which are attached together with four smaller ceramic standoffs. The bottom of these metal plates is attached to the top of the metal circular component with screws. There are eight small white tube components: four protrude from the top metal square plate and four protrude from the bottom square metal plate. There are several small thin metal wires which are attached to both square metal plates.