Many oven and hobs are poorly designed in this respect. Our oven has the markings on the oven face, but they are so tiny and the contrast colours are so poorly chosen, that I have to get the torch out of the drawer to see them.
Our hob (different maker) has round knobs, with a tiny black dot on the top of the knob, to indicate the position. Sitting down in the kitchen to dinner, you cannot see whether they are on, or off, unless you can see the flame. You have be at the hob and looking directly down on the knobs. They were so annoying, I bought a set of more conventional knobs, with a raised part across the diameter. From the raised parts position, it is easy to tell.