Meter Stick Optical Bench Kit with Double Concave and Convex Lenses Material_Ceramic and lead plugs for pump-plate

and lead plugs for pump-plate connection during evacuation

Multiple adapter in borosilicate glass features two parallel necks with 24/29 sockets for connecting multiple components in chemistry apparatus

the flywheel light enough to drive by breath for hands-on reciprocating-engine study

and momentum-collision setups where a mid-size projectile is needed

Class A with 34/35 joint size

Meter Stick Optical Bench Kit with Double Concave and Convex Lenses Material_Ceramic and lead plugs for pump-plateMeter 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.