¶ Johansen Gauges
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Index Entry
Johansen Gauges:
“In mass production, Henry Ford, in order to have interchangeable parts had to be able to make very fine measurements. And he became very interested in guages for reducing the tolerance of error. Johanses developed fantastic guages. These were block guages with the surfaces so superbly machined that the distances between the surfaces was less than a molecule of the atmosphere. Therefore once you had them together you couldn’t lift them apart-- like this-- because the gas couldn’t get in. You could only slide them apart. But if you, with Johansen guages, if you don’t slide them apart pretty quickly, you’ll never get them apart again because they are in such critical proximity that the atoms literally fall inward and coalesce as solid metal. I just wanted to give you another sort of prominent kind of experience that we do have, at least can have, at our Earth level.”
¶ Citations
- RBF address, transcript pp. 5-6, Tel Aviv, 16 Jun’72
