Given the following information (ignore the top posts on the LEGO bricks): The short blocks have a thickness of 3.20±.01 mm The tall blocks have a thickness of 9.60±.01 mm When the stack is the TALLEST: What would the maximum size of these gaps be? Solution I a little confuse with this, but with the gaps I think that you are talking about the separation between them? if you put the tallest form, the tolerance is 0.02 mm, so this would be, but I don´t really sure.