Projection Screen 36 x 48" LabLearner providing a measurable projection surface

providing a measurable projection surface for sizing real images formed by lenses and concave mirrors

Designed to electrolyze water into separately collected hydrogen and oxygen

paired with 4mm sockets so iron-filing patterns can be mapped around a current-carrying conductor for Oersted's experiment

5 inch base with a two-tension-setting spring gun and visible internal components

Projection Screen 36 x 48" LabLearner providing a measurable projection surfaceWall automatic roll back spring action screens (box type casing), with hooks for mounting on walls and an AUTOMATIC roller mechanism for winding. Wall automatic roll back spring action screens (box type casing), with hooks for mounting on walls and an AUTOMATIC roller mechanism for winding. Size : 36 x 48"