None of the others in town have these, thought it was unusual enough to share
You ever seen those invisible dog fences? Once it crosses an electrical barrier it triggers an alarm of sorts and in this case I assume it engages some sort of brake mechanism.
post things that are mildly interesting
You ever seen those invisible dog fences? Once it crosses an electrical barrier it triggers an alarm of sorts and in this case I assume it engages some sort of brake mechanism.