Voltmeter increments
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Joined: Sep 2006
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From: Fort Worth TX.
Voltmeter increments
I tried "search", no luck, can't believe this hasn't come up. Why don't the increments on the C-7 voltmeter add up? The number of marks/increments don't total up on either side of 13. Oil gauge totals up fine. What am I missing?
bill
bill
E-Ray, 3LZ, ZER, LIFT
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From: NE South Carolina
Have to check with my digital meter in the console power receptacle to get a reading I can understand! I use an old power adapter and cut the wires so I can connect the meter leads.
E-Ray, 3LZ, ZER, LIFT
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From: NE South Carolina
Last edited by JerryU; Dec 27, 2014 at 02:16 PM.
Burning Brakes
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I posted a question about this on another forum I frequent. I think this guy's reply hits the nail on the head.
"For a large part of my working career I was an engineer with responsibility for instrumentation for GM vehicles. With few exceptions, these gages were quite functional as instruments with min and max pretty good and the actual calibration set for the mid scale grad. The rest of the dial was created by Design Staff whose function was to worry about appearance, styling, and ergonomics. They drew the intermediate graduations where they wanted them for readability and appearance, not to mean something in terms of value."
"For a large part of my working career I was an engineer with responsibility for instrumentation for GM vehicles. With few exceptions, these gages were quite functional as instruments with min and max pretty good and the actual calibration set for the mid scale grad. The rest of the dial was created by Design Staff whose function was to worry about appearance, styling, and ergonomics. They drew the intermediate graduations where they wanted them for readability and appearance, not to mean something in terms of value."
Thread Starter
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Joined: Sep 2006
Posts: 52
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From: Fort Worth TX.
still no direct answer
Guys,
Nice info and pics, but no one yet addresses why there are 4 increments shown on the gauge and 5 volts numbered above and below 13. Seems odd to me even if the "design staff" created it.
Anyone know why?
bill
Nice info and pics, but no one yet addresses why there are 4 increments shown on the gauge and 5 volts numbered above and below 13. Seems odd to me even if the "design staff" created it.
Anyone know why?
bill
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From: I live my life by 2 rules. 1) Never share everything you know. 2)
St. Jude Donor '11-'12-'13, '16-'17-'18
Logarithmic versus linear divisions is my guess. As the voltage increases, that increase is no longer linear....
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,860
Likes: 12,293
From: NE South Carolina
I posted a question about this on another forum I frequent. I think this guy's reply hits the nail on the head.
"For a large part of my working career I was an engineer with responsibility for instrumentation for GM vehicles. With few exceptions, these gages were quite functional as instruments with min and max pretty good and the actual calibration set for the mid scale grad. The rest of the dial was created by Design Staff whose function was to worry about appearance, styling, and ergonomics. They drew the intermediate graduations where they wanted them for readability and appearance, not to mean something in terms of value."
"For a large part of my working career I was an engineer with responsibility for instrumentation for GM vehicles. With few exceptions, these gages were quite functional as instruments with min and max pretty good and the actual calibration set for the mid scale grad. The rest of the dial was created by Design Staff whose function was to worry about appearance, styling, and ergonomics. They drew the intermediate graduations where they wanted them for readability and appearance, not to mean something in terms of value."
That makes the most logical sense! The engineers define the middle and end points fairly accurately and the graphic guys fill in the space uniformly! They don’t know what a volt is or who Alessandro Volta was, nor care! They use the little and big bars because they look good!
Last edited by JerryU; Dec 28, 2014 at 01:47 PM.
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