Your office boy can install it!!!:
Thanks, Greg.
Thanks also for contributing the 48 page ca. 1915 WE Interphones and Accessories catalog, which is currently in the TCI LIbrary Inbox.
http://www.telephonecollectors.info/inbox (http://www.telephonecollectors.info/inbox)
No problem, hopefully it will spur a Renaissance in Inter-Phone collecting!!!