Eastonia ?
You can see on the photo below an early lead acid battery supplying the 2V filaments of the valves. It has ONLY 2 plates of 10 m.m. thickness and gap of 10 m.m.!!! Each plate has a number of 1 m.m. holes.
You can see on the photo below an early lead acid battery supplying the 2V filaments of the valves. It has ONLY 2 plates of 10 m.m. thickness and gap of 10 m.m.!!! Each plate has a number of 1 m.m. holes.
