Connecting Lead, Model V Racks & Stands_Test Tube Racks Built to reveal stress fringes

Built to reveal stress fringes in transparent solids

demonstrating mechanical advantage as the angle of incline changes the effort needed to roll the cart up the slope

Length-adjustable wooden pendulum simple-machine model with a blue bob sliding along the string and a wooden guide keeping the swing on a consistent path for period-vs-length measurements

Glass equilibrium tubes with plastic base demonstrate pressure equilibrium

Plastic holder atop a 4

Connecting Lead, Model V Racks & Stands_Test Tube Racks Built to reveal stress fringesStackable 4mm lead with nickel plated split hollow pins on both ends, supplying a branched circuit patch wire where additional leads need to share the same terminal connection.