As we know, the accuracy of these precision tools
must be tested and verified periodically. The FAA requires it. I’m not going to go into this because every company is required to conform and as mechanics, we probably just send them in annually to have them calibrated. I think we all know what happens. They are tested against a standard that must also be calibrated periodically.
LET THERE BE LIGHT I guess it could be said that my final tool was discovered, way back, sometime after the hammer but before most of our other tools — man discovered fire! We know that man used this tool to cook food and
to keep warm, but we also know that he was able to light up the darkness of the night and to explore dark caves — enabling him to find a more comfortable and safer living environment. This tool has been accepted throughout history as one of man’s greatest inventions. This is not to say that there hasn’t been some “tweeking” of this tool through the ages. The flashlight was invented in 1898.
By the end of the 19th century, using the invention of the incandescent electric light bulb and the invention of the first dry cell battery in 1896, the English inventor, David Misell invented the first flashlight in 1899. The dry cell battery utilized a paste electrolyte instead of a liquid. It could work in any position and it wouldn’t spill. It was a perfect source of power for a portable light source. Unfortunately, those first batteries were not that reliable nor did the power last that long. Combined with the inefficiency of the first light bulbs, you can understand how this tool got the name “flash light.” We all have at least one flashlight, and we have had them all of our lives. I sometimes can’t help but laugh when I read the Airbus helicopter manuals. The French translation refers to the flashlight as a “torch.” I know the manufacturer’s manual say’s to inspect for fuel leaks with a torch, but I’m just not going to do it.
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GILLBATTERIES.COM April | May 2020
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