Capacitance Substitution Box, Capacitor Box, Using 1 Rotary Dial With 12 Steps. Various Capacitors Are Selected One By One. Useful For General Purpose Electronic Work. The Unit Has An Easily Selectable Range Of 12 Preferred Capacitors From 100 Pf To 1 Mfd
Condenser Box, provides differentvalues of Electrolytic capacitors ranging from 1ufd to 4.7ufd, +/- 10% tolerance and, of 63 volts working voltage, Built on 8in x 5in Plastic Box
Electricity Box, Junior Engineering, has assortment of motors, bulbs, sockets and much more comes in a handy divided utility case, Contains: batteries, battery holders, various bulbs, various sockets, buzzers, motors, switches, and hook-up wire. 117 pcs in total.
Horizon Energy Box, Combines All Horizon Kits And Modules Into One Large Set For Classroom Use 100+ Experiments And Hours Of Activities With This One Set, Comes In A Plastic Storage Box For Long Term Storage, Cd With Curriculum Manuals, Assembly Instructions
KidWind Solar Thermal Exploration Kit, modeled after a domestic solar water-heating system. Explore variables such as box color, light intensity, tube design, rate of water pumping, and amount of time it takes to heat the water