US$ 449.50
this four-socket E10 lamp holder pre-wires four bulbs across a single pair of 4mm banana terminals
and 26 SWG - sized as the matched replacement set for the PH0730 sonometer
Illuminated solar system model with a socket-lit sun
a smaller-range counting tool for introductory arithmetic and place-value work
Balancing Lever Kit, Class Pack of 5 Heat & Thermodynamics_Energy Transfer & Engines this four-socket E10 lamp holderFive lever balancing class pack with 600mm plywood levers, 4 fulcrum triangles, and 40 metal masses matched to 1%, deliberately using non standard graduations to build empirical reasoning.
US$ 449.50
US$ 449.50
US$ 449.50
US$ 449.50
US$ 4200.00
US$ 1485.00
US$ 1760.00
US$ 1500.00
US$ 4400.00
US$ 1250.00
US$ 13860.00
US$ 422.50
US$ 449.50
US$ 10.40