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Found four placement reworked 3d models.

free
grabcad
Semiconductor Carrier 40 x 40 MM REVA  ( 2 x 5 Matrix )
free
grabcad
Semiconductor carrier 19 x 19 mm reva ( 3 x 8 matrix )
free
grabcad
Probe pins holder/placement jig
free
blendswap
Lego Space Marines 2.0