The minimal icon sizes that I can see is
(Click the pic to see it in its orig size)
I don't think it should be allowed to set sizes smaller than that. At the size above, the normal heat exchanger and the component heat exchanger is already barely distinguishable. However, it can be set smaller.
The minimal icon sizes that I can see is (Click the pic to see it in its orig size) I don't think it should be allowed to set sizes smaller than that. At the size above, the normal heat exchanger and the component heat exchanger is already barely distinguishable. However, it can be set smaller.