Hooke's Law Apparatus with Weight Pan Lab Supplies_Rulers & Measuring Supplies supplied on a plastic-and-metal rack

supplied on a plastic-and-metal rack with a carrying handle for classroom transport

Permanent-magnet moving-coil meter mounted in a transparent wooden box with all internal electrical connections visible

and iron rods at 150 by 3mm mounted along a hot-water tank

the basis for classic determinations of the local BH constant

landing it back in the same barrel as the car rolls forward

Hooke's Law Apparatus with Weight Pan Lab Supplies_Rulers & Measuring Supplies supplied on a plastic-and-metal rackHooke's Law apparatus with a mirror backed scale, overhead spring, and pointer equipped weight pan, accepting any weights to plot force versus extension data on linear relationships.