Meter Stick Optical Bench Kit with Double Concave and Convex Lenses Entomology & Zoology_Zoology Charts & Models Aspirator bottle with outlet for

Aspirator bottle with outlet for tubing

Twenty-one bacterial model set demonstrates morphological diversity

demonstrating compound-pulley mechanical advantage in paired configuration

Thirteen-piece mix of nine steel and four brass precision weights from 1 gram to 1 kilogram

the lighter companion to the PH0341A roller for inclined-plane investigations

Meter Stick Optical Bench Kit with Double Concave and Convex Lenses Entomology & Zoology_Zoology Charts & Models Aspirator bottle with outlet forMeter stick optical bench with a hardwood rule, two lens holders, point source, candle mount, index card screen, and a matched pair of convex and concave lenses for image formation exercises.