Ken: The September 2001 American Bee Journal (page 648) has a dimensioned drawing of the device from 50 years ago. The plans along with some useful text on the polariscope also appeared in the North Carolina State Beekeeping Association's 2001 calendar for the month of November. One source for the polarizing filter is B&H Photo-Video. They carry a ROSCO #7300 19x20 inch polarizing filter sheet. You only need two 6-inch square pieces however, so you might check to see if others are interested in making the polariscope. Their email is [log in to unmask] Their phone is (800) 606-6969. The Southcentral Alaska Beekeepers Association's newsletter used the NCSBA's calendar article in its September issue. Contact me [log in to unmask] if you think your might be interested in the article. Regards, Dick