Meter Stick Optical Bench Kit with Double Concave and Convex Lenses Entomology & Zoology_Zoology Charts & Models this 8-piece polypropylene graduated cylinder

this 8-piece polypropylene graduated cylinder set spans 10mL to 2000mL with raised graduations for classroom and lab work

demonstrating compound-pulley mechanical advantage in paired configuration

Twenty-one bacterial model set demonstrates morphological diversity

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

5 inches apart

Meter Stick Optical Bench Kit with Double Concave and Convex Lenses Entomology & Zoology_Zoology Charts & Models this 8-piece polypropylene graduated cylinderMeter 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.