Twetch ·
The systems marketed in North America as the 1A, 6A, 1A1 and the 1A2 Key System are typical examples and sold for many decades.
Replies
Twetch ·
The unimetric 2 bell systems
First was the telegraph in 1850.
https://streamanity.com/video/UseHHhMTqjXdUo
Twetch ·
would watch but not familiar with domain
Twetch ·
A metric system of communication networKs
Twetch ·
no $I mean streamanity