What are the accurate measurements for (every piece) Lego pieces? - Quora
Tips&Bricks - #1418 TIPS: LEGO dimensions and units This... | Facebook
Lego Bricks | engineering-ii
Bricks by JeremyMallin on DeviantArt
the complete parts reference bricks
What is the interference lock offset of a LEGO stud/hole such that it fits snugly into another piece? (i.e. What are the snap mechanism dimensions?) - Quora