‘American Bee Journal’ Spetember 2001, page 648 has a dimmensioned drawing of a polariscope. The dimmensions aren’t real critical. It’s a box roughly 7 inches on each side with a 75 watt light bulb inside. At the front of the box is 6 inch square sheet of polarizing film. A second sheet of film with its polarizing plane oriented 90º perpendicular is placed about 6 inches in front of the other sheet. ‘The Hive and the Honey Bee’, page 909, also shows a polariscope. Check with photographic suppliers for the polarizing film. I used this company back in 2001 since I couldn’t find any one locally that carried it: http://www.bhphotovideo.com/ At the time they carried a ROSCO #7300 19x20 inch polarizing filter sheet. You only need two 6- inch square pieces though, so you might check to see how many others are interested in making polariscopes. Regards, Dick Allen -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---