This is a paraphrasing task. In this task, you're given a sentence and your task is to generate another sentence which express same meaning as the input using different words.

each variation in speed of 10 kilometres per hour must be represented on the record by a variation of at least 1,5 millimetres on the corresponding coordinate .
any change in speed of 10 km / h shall be displayed in writing by changing at least 1,5 mm to the corresponding grid .