Testing Temperature Uniformity Across a Kapton Heater Surface

https://advanced-heating-guide.laurelcurrent.com/posts/why-kapton-heater-thickness-matters-in-compact-equipment

In precision instruments, a kapton heater must deliver heat in a controlled way. It uses a resistive foil circuit laminated within polyimide film. One useful trait is custom circuit patterns. Still, hot spots can change the result