Hand Pump for Physics Demonstrations Subcategory_Wash Bottles this 15-inch motion-converter model shows

this 15-inch motion-converter model shows the engineering principle behind crankshaft pistons and rotary-to-linear mechanisms

Comprehensive seven-piece acrylic blocks set at 25mm thickness

a battery-free source of partial vacuum for bell-jar demonstrations without external power

both striking the ground together

6 inches for clean pinhole-imaging and diffraction studies

Hand Pump for Physics Demonstrations Subcategory_Wash Bottles this 15-inch motion-converter model showsHand operated pressure pump supplying positive pressure for gas law, pressure vessel, and pneumatic demonstrations, a battery free source for physics classes exploring pressure behavior.