Overview Product Description Dial glass for Farnsworth ET-066. Farnsworth part number F 31-278. 7.42" W x 1.67" H x .094" thick (nominal). Product Videos Custom Field Product Reviews Write a Review Write a Review × Farnsworth ET-066 Dial (Item: DG-563) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *