1) ICS LINK - https://ics-redux.ligo-la.caltech.edu/JIRA/browse/ASSY-D0900360-N/A
2) The 'flat' adobe pdf drawing is created with SLDDRW revision X-008 and SLDASM revision X-121.
3) The e-drawing is created with SLDASM revision X-121
Latest rev. shows the actual height of the BSC8-H2 chamber from the floor to the Beam Center Line.