I have a sentence. I want to rewrite it is more clear. Could you help me to correct it? I am not family of English. Thank you in advance
Explanation: I considered three methods: method A, B and C to measure the weight of each box. I want to measure which one is best method. To fair comparison among methods, the number of books in each box has to same. For example, if I have 8 books in box1. I will use method A to measure the weight of box1. Then I need to use same amount of book (8 books) to measure the weight using method B. The bellow sentence describer what I said. However, it is not clear to understand. Could you help me to correct it?
To fair comparison among methods, the amount of book in each box of referenced method is same with amount of book in compared method.