Well, I found magic numbers, and I found that gauge beeing created with size from module AbstractGauge.cs. I made simple buttons in config window to resize gauges, but now I don't know how to apply new sizes to them.
[LOG 21:40:37.102] TextureCompressor: Memory Saved : 138MB Mods installed: Kethane, KW Rocketry, Interstellar, KAS, TAC Life Support, City lights&clouds. For me, this mod is still useful.