Not sure what the first gage is but the second one is your charging system and it might be a “tad” high. Should be around 14-15 volts but 16 is not out of sight.
Is the first one a depth gage?
If so, you would need to calibrate it next to a digital depth gage to see how much it’s off (if at all)
Is your boat exhibiting any bad or unusual symptoms?
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