US$ 847.50
Semi-stiff nylon bristle brush on a twisted stainless steel wire handle
Spare pack of ten low-mass pith balls sized for the standard pith-ball electroscope
Five color-coded ceramic ring magnets at 46mm diameter mount on a 15cm wooden dowel
Used to position a fine point object on the optical bench
Demonstration electrophorus with a 9cm aluminum disc
Parallel and Series Circuit Demonstrator Pack Size_5 Semi-stiff nylon bristle brush onFive bulb circuit demonstrator with 8 removable metal bars on a heavy base, letting students rearrange bars to convert between series and parallel topologies on the same set of lamps.
US$ 847.50
US$ 647.50
US$ 647.50
US$ 29.95