Citation: Jamie Berard, Stressing the Elements (2006). — p. 2.

System and Technic are not 100% compatible

The Center Point for the stud on the side of a System brick is 3.92mm from the top of the brick

The Center Point for the hole in the side of a classic Technic brick is 3.80mm from the top of the brick

The Center Point was moved up in order to accommodate the additional plastic needed around the Technic hole so that a stud can still fit in the bottom of the brick.

In this presentation, Jamie Berard offers definitive evidence of the 0.12mm vertical difference between the midpoint of a SNOT element and a Technic brick.