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BackDesign rules: https://www.xilinx.com/support/documentation/user_guides/ug1099-bga-device-design-rules.pdf Altera UBGA U324 BGA-324 BGA-624, 25x25 grid, 21x21mm package, pitch 0.4mm; see section 7.6 of http://www.st.com/resource/en/datasheet/stm32l072kz.pdf WLCSP-49, 7x7 raster, 3.294x3.258mm package, pitch 0.4mm; see section 6.1.
- Normal 0.552477 -0.109968 -0.826242 vertex -3.17521 0.
- Sphere_indents_faces = 16; // Distance of the dialhand.