Balanced Wind Vane Plastic Labware_Plastic Wash Bottles this metal helix lets stairwell-scale

this metal helix lets stairwell-scale wave-propagation experiments amplify the visibility of standing waves

and storage between uses at the laboratory bench

Thermometer-specific clamp with an integrated boss head

a compound unit for demonstrating multi-rope mechanical advantage in physics activities

Two-speed ticker timer kit printing 25 or 40 dots per second on paper tape via carbon discs

Balanced Wind Vane Plastic Labware_Plastic Wash Bottles this metal helix lets stairwell-scaleBalanced wind vane with a steel pivot bearing assembly and direction indicator mounted on a cast iron base, a sturdy meteorology tool for classroom and field weather observation.