MMReadoutParameters Node1 MMReadoutParameters + stripPitch + gasThickness + pcbThickness + driftThickness + zpos + distanceFromZAxis + roLength + activeBottomLength + activeTopLength + activeH and 12 more... Node2 std::vector< int > + elements Node2->Node1 +readoutSide Node3 std::vector< double > + elements Node3->Node1 +stereoAngle