Hall's Carriage with 1.25" Wheels, 5.25 x 1.2" Physics_Heat & Thermodynamics supplying the standard durable instrument

supplying the standard durable instrument for routine student voltage measurements

5-meter bench on leveling-screw feet

sized to stack on a vertical rod for like-pole repulsion levitation demonstrations

and a hook magnet for center-of-gravity

One-ohm reference resistance coil non-inductively wound from double silk-covered constantan on a plastic rod inside a transparent housing with two terminals at plus-or-minus 1% accuracy

Hall's Carriage with 1.25" Wheels, 5.25 x 1.2" Physics_Heat & Thermodynamics supplying the standard durable instrumentPlastic resin Hall's carriage at 5. 25 by 1. 2 inches with 1. 25 inch aluminum wheels, rolling smoothly across inclined and level surfaces in friction and motion experiments.