Hello All, I have created a 3d pdf file with the geometry as described in mcdrcal01. If you open the attached pdf file in Adobe Reader you should be able to navigate the detector hierarchy, turn different parts of the detector on and off, etc. If you open it in Adobe Acrobat you will have an expanded menu of options, including the ability to measure dimensions. Please let me know if you experience any difficulties accessing the file or have any questions. Norman ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the MCD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=MCD-L&A=1