1000mm Black 4mm Double-Sided Connecting Lead Item Type_Density Cubes & Cylinders this wool cloth is a

this wool cloth is a standard accessory for electroscope and Van de Graaff work

Built to grip round flasks and condensers during distillation or reflux

Plastic-cased solar energy kit with a panel

this holder keeps light shaping consistent across diffraction

Tangent-galvanometer instrument that derives current absolutely from compass-needle deflection against Earth's horizontal field

1000mm Black 4mm Double-Sided Connecting Lead Item Type_Density Cubes & Cylinders this wool cloth is aOne meter black insulated lead with 4mm banana plugs and 16mm metal terminal tips at each end, sized for the longest cross bench reach in plug to plug patch wiring.