I have recently been contacted by 3 persons expressing interest on my B-L sunrecorder. Unfortunstely my sunrecorder has been offline since we moved a few blocks to a new house June 6, 2019. I do not have a good line of sight at the new location so it is in storage. May need to look for a new home for it. However B-L sunrecorder are still on the map.
During the year that I had both the B-L and the Davis VP2 Plus with solar and UV I found the B-L to be much more accurate and precise. Davis does report some sunshine on days when in fact there was no bright sunshine at all. On bright sunshine days both were fairly close on actual sunshine hours but B-L was accurate within seconds of the sun going behind clouds or reappearing.
I miss it,
Paul