MR CIRCUIT

ELECTRONIC HOBBY LABORATORY KITS COMPRISING CIRCUIT BOARDS, RESISTORS, CAPACITORS, SPEAKERS, POTENTIOMETERS, DIODES, WIRES, TRANSISTORS, PHOTOCELLS, SWITCHES AND LABORATORY MANUALS; CIRCUIT BOARDS; RESISTORS; CAPACITORS; SPEAKERS; POTENTIOMETERS; DIODES; WIRES; TRANSISTORS; PHOTOCELLS;, SWITCHES; AND LABORATORY MANUALS