Claude, et.al., Claude Hartman wrote:
>.............. There seems to be continuing concern for the >use of this name. As before, there seems to be no other >reason to refer to these non-linear gnomons as "bifilar" >other than the total lack of any better terminology! .... . I don't know that it improves matters, but instead of chiefly looking at structures, perhaps one could consider functional aspects. E.g., "compound-shadow dials," "interactive-shadow dials," "dual-, triple- , etc.- shadow dials?" Bill Maddux 40.37° N., 74.65° W.
