Old battery set

[ppppenguin]

...... a much earlier one with 23 different parts!  ......

Not so much 23 as 57. That set is a Heinz


A demonstration of how everyday folk could assemble a working radio. An era where this sort of technological sophistication was accessible to any enthusiast. Nowadays most hardware is inaccessible. Though there are plenty of people who play with Arduino, Raspeberry Pi etc.