Double Concave Lens, 100mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs hidden Cut or score paper by

Cut or score paper by pressing on the square blade carriage and sliding it up and down along the clear bar

2 Extra Adjustable Velcro Straps and 2 Specially Designed Velcro Fixing Systems for Best Fit

energy or tape wasted

has long service life

the nichrome wire diameter is 21 gauge/ 0

Double Concave Lens, 100mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs hidden Cut or score paper byDouble Concave Lens, 100mm Focal Length, 3" (75mm) Diameter Spherical, Optically Worked Glass Lens Ground Edges, Polished Great for Physics Classrooms Eisco Labs Product Features DOUBLE CONCAVE Highly polished, double concave lens SPHERICAL Lens measures 3" (75mm) in diameter 100MM FOCAL LENGTH Diverging lens with a 100mm focal length OPTICALLY WORKED GLASS Made of high quality, optically worked glass. Highly polished with ground edges GREAT FOR