Description
This 1953 vintage ad for General Controls has a three-color art illustration of flying bats with the tagline, “Activated by Feedback”.
Year Published: 1953
Approximate overall size – inches: 5 x 12
Grade: Excellent
Excerpt:
“The bat’s incredible accuracy in flight is based on feedback. Ultra-sonic waves from the bat’s unheard cry bounce back from objects in its path of flight and are transformed instantly to impulses that control flight. Automatic control engineers would call it a feedback control system.”
This is a 70 yr. old original vintage ad removed from a 1953 publication and is not a reproduction of any kind.
