Optical Glass Lens, 3" (75mm) - 200mm Focal Length - Ground, Beveled Edges - Use as Top Spinning Base - Eisco Labs industrial When you need everything in

When you need everything in sight

Package includes: 20 PCS

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

air cylinders and air tools to an acceptable level within OSHA noise requirements

600 ENTRY LINES Perfect for any money planner

Optical Glass Lens, 3" (75mm) - 200mm Focal Length - Ground, Beveled Edges - Use as Top Spinning Base - Eisco Labs industrial When you need everything inOptical 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