Aluminum Pendulum Bob with Hook, 25mm Type_Tall Form this wooden simple-machine model lets

this wooden simple-machine model lets students measure input effort against output splitting force at different wedge angles

Two-cylinder brass fluid-pressure apparatus with 19mm and 38mm leather-packed pistons connected by a brass tube

sized to slot into modular Ohm's-law and series-parallel-circuit investigations

D-frame compact aquatic net with fine-mesh plankton netting and an integrated flat plastic handle

Aluminum Pendulum Bob with Hook, 25mm Type_Tall Form this wooden simple-machine model letsAluminum 1 inch diameter pendulum bob at 0. 7 oz with a removable threaded brass hook, the lightest option in the series for mass dependent period comparison experiments.