OPTICAL BENCH, WITH LASER (0549) Optical Bench similar to Cat No. 1110960, but with riders and accessories adapted to work with laser. Supplied complete with following accessories. ? Oiode Laser mounted in suitable enclosure, ? Convex Lens, Concave Lens and Concave Mirror-1 each, ? Diffraction Grating - 1 No., ? Double Slit - 1 No. ? Slit / Grating holder - 1 No., ? Lens Holder-1 No., ? Receiving screen having millimeter grid to facilitate measurements - 1 No., ? Riders - 5 Nos. Qty :