WBZ's phasor is not original to the site; I suspect, given the apparent age, that it was built at the same time as the MW-50s were installed. It's made by our friends C.S.P. Inc. of Doylestown, Pennsylvania (who seem to have been the Kintronic of their day, judging by the number of phasors I've seen that are nearly indistinguishable from this one).
Copyright 2005, Garrett Wollman. All rights reserved. Photograph taken 2005-06-09.