Having packed all your equipment needed for such an arduous journey, like crampons, skis, helmets, etc. you and pinkie set of for the Doomdale Mountains, where you're apparently meant to retrieve something called W1ND3G0 Flour (it's apparently not pronounced how you think it is, nor is flour in the traditional sense, but this isn't what you call a traditional cake). it's not an especially easy going trip, considering that the Doomsdale Mountains are under the sea: you had to employ the use of camels for much of the journey. Before any readers point out camels for an underwater trip is mad, that is precisely why Pinkie found only MAD camels: only they can even LIVE underwater.
After you have surfaced for what you estimate is the last meal necessary, you finally reach the peak (which many have mistook for an island) sticking right out of the water, and before you is a huge stone monument towering to the sky. that, apparently, is where you will find the flour for the Cake of Diablos.
You don't know how tall the pillar reaches, but fortunately, Pinkie has a magical extendable ladder that she stole/borrowed without permission from Twilight Sparkle that should make itself tall enough to reach the top. However, there is a small problem: the ladder works by stating how long you need it to be, and it will instantly form a stepladder of the stated length, down to the millimetre. However, without knowing exactly how tall the stone pillar is, there's the risk that whatever ladder you call upon will either be too short, and you won't reach the flour, or too tall and it will impede your efforts to take the flour trying to reach around it.
When you ask whether if Pinkie has any useful equipment, Pinkie confesses, as she pulls the items from out of her ears, since there's no room for them in her mane, that all she has to offer are two one metre-long rulers. It goes without saying that such a device is certainly shorter than the pillar, but thankfully, the surface area of the mountain peak seems just large enough for the idea that you have just come up with. So how, exactly, are you going to measure how tall the stone pillar is and reach the flour at the top?