Why do the numbers have to be decimals? Would it be so difficult to multiply every related value by 10, and do away with the ugly period?

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Original post by Tetragrammatonn [...]the values range from 0 to 15, and I need to show changes as small as 0.5.

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Original post by kru Why do the numbers have to be decimals? Would it be so difficult to multiply every related value by 10, and do away with the ugly period?

Scaling by 2 instead of 10 would keep both the numbers small and matches the representation by integers to the desired resolution. However, if I may ask a seemingly off-topic question: Why aren't the values integers to begin with? Changing the problem from displaying floats to displaying integers might simplify things.
Another idea:
Show the values by a simple dial with a up/down trend indicator, and provide precise values via tool tip (the real life metaphor: You can get a rough estimate by a quick look at a mirrored scale, but for an accurate reading you have to move your head over it. A battery can have a voltage meter parallel to it, indicating charge, and an amperemeter in series, to indicate charge/discharge rate).