Attention 15.24cm it is the length of this square 15x24 and not as I imagined it to order, once she has more to play than the tool. Once tight léquerrage is wrong, I did not check the parallelism of the level relative to the side of the bracket opposite.
For the good side, when tightened there is no game that's something.
For the price, it will make some services to defer lengths but do not expect a top quality product.