All those who responded got it all wrong. It's an old style microscope and Dr. Hynek's son wants to look at some ants. Unfortunately, the "microscope" is also seriously undermounted. Everyone is smiling even though they could all be vapourised at any time by the start of WW3.
They are also blissfully unaware that KGB spies live a few houses over. Also, by the way the kid is looking through the eyepiece it is obviously one of those tri-schiefschpiegler microscopes where the eyepiece must be mount on an angle to compensate for the built-in optical errors inherrent in the tri-schiefschpiegler microscopes.
The son will soon find out from microscopic observation that these are a "mutant" form of fireant that will soon plague the entire town. Luckily, the Aliens that have been living on Earth for quite some time, will come to the rescue of the happless Earthlings and save them from those pesky muto-fireants.
Other than that, everything is all hunky-dunky!
Glad to help. Well, my work here is done....(sound of transporter beaming me away)...