Good-Lite Occluder Four Inch with red filter printed with RP name pupilometer an
Mini Hand-held Red Filter
These easy to use and carry around Mini Red Filter is only 4 inches (10.1 cm) long. Handle in printed with half moon to the edge with 8 sizes: 2 mm to 9 mm and 6cm ruler. Easily fits in a trial lens frame and cleans up with alcohol.