Optical Glass Lens, 3" (75mm) - 200mm Focal Length - Ground, Beveled Edges - Use as Top Spinning Base - Eisco Labs industrial Package includes: 20 PCS

Package includes: 20 PCS

When you need everything in sight

TILISMA Heart comes with a very beautiful packing

75 INCHES Long and 5mm thickness

Magnetic feet make the gauge self-standing for setting the cutter depth on router tables and it has a low profile for back fence adjustments

Optical Glass Lens, 3" (75mm) - 200mm Focal Length - Ground, Beveled Edges - Use as Top Spinning Base - Eisco Labs industrial Package includes: 20 PCSOptical Glass Lens, 3" (75mm) 200mm Focal Length Ground, Beveled Edges Use as Top Spinning Base Eisco Labs Product Features DOUBLE CONCAVE Highly polished, double concave lens SPHERICAL Lens measures 3" (75mm) in diameter and approximately 12mm thick 200MM FOCAL LENGTH Diverging lens with a 200mm focal length OPTICALLY WORKED GLASS Made of high quality, optically worked glass. Highly polished with beveled, ground edges GREAT FOR PHYSICS CLASSROOMS or