Projection Screen 36 x 48" LabLearner Adjustable mass on one fork

Adjustable mass on one fork shifts its 440Hz pitch by a few hertz

easily inclinable surface for dynamic-cart and momentum experiments in mechanics units

sized for individual student-lab use in simple-machines units

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

Projection Screen 36 x 48" LabLearner Adjustable mass on one forkWall 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"