What measurements are you looking for? In terms of balance most of the research I did indicated that a tag along trailer should have about 10% tongue weight, while a goose should be more like 20%. When I bought my used homemade gooseneck trailer the balance was right at 11% empty, and I really didn't like the way it pulled. I was always having to load my Bronco all the way forward on the deck to make it feel right. A few weeks ago I did the calculations and determined that I needed to move the axles back about 20" in order to get 20% tongue weight empty. I went ahead and moved the axles back and wow, what a difference it made! It was real bouncy when it was empty before, and now it tows like a dream. So my advise to you would be to pay close attention to the axle placement, and therefore the balance, because it makes a big difference.