Knock guage with a needle instead of LEDs

[Warp6]

I think a knock guage would look really cool with a printed face and a needle that would swing up as knock increases. Could be made as a center pivot (360 swing)and a lower pivot point (sweep). This would match up nicely with most of the guages available today. It would look more like a mechanical guage. It could have dashes as reference points for knock and maybe a color line go from white to yellow to red, or something, like a tach.