Review on Westmark Germany Measuring Measurement Cooking by Sarah Johnson

I'm French living in the US and bought this to use with my French recipes. I've used measuring cups all my life in France, but I don't understand this one at all. Sometimes it says which block is used, sometimes it doesn't, don't know why. Let's take flour for example. On the left there is a measurement from 100 to 600 but it is not specified in what units! Another example: sugar. Left liters, right 200 to 900. The unit is not fixed. I have never seen such a bad design. Our whole family sat and looked at him, trying to understand. and nobody could understand it.