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Today's tip of the day?
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Posted by jdemaris on December 17, 2003 at 06:54:37 from (209.23.30.108):
Wonder if anyone disagrees with this website's "Tip of the Day." It describes a specific and absolute difference, in technical definition and operation, between an ammeter and an amperage gauge.
Not trying to nitpick too much, or be over erudite, but words and phrases mean something, depending on their context. Besides antique tractors, cars, engines, etc., I also collect old tech. books and manuals and have been a mechanic most of my life. I can find many references to ampere gauges, amperage gauges, ammeters, and indicators, along with diagrams, where the tech. writer or author has them performing identical functions. Descriptions vary depending on who is doing the writing, and/or the time-period it takes place. I find references to "two way ammeters", "one way ammeters", "DC ammeters", "dash ampere gauges", and more. Also frequent mentions of an "indicator", which also shows ampere flow but includes starter motor draw.
Generally speaking, an ammeter, ampere (or amperage) gauge all measure amperes. An ampere, (by one turn-of-the-century description) is the current produced by an electromotive force of one volt in a circuit having a resistance of one ohm . . .
I mention all this, because I belive it is misleading to put absolute definitions on devices found in old cars and tractors, when they are not set in stone.
Most of the old tech. books and manuals go into great detail in their descriptions so the reader knows exactly what is being described. Much more so than what's found in modern repair manuals.
Take a look at a 1916 Audels Automotive Guide, or A Pracital Treatise on Self Propelled Vehicles (including tractors) ca. 1905, or Dykes Diseases of a Gasoline Automobile 1903.
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