Mechanical Television 1933 Russian Mirror Screw SetSavod M.A. Chernov Moskau 30 line mirror screw set in the Popov Museum in St. Petersburg, Russia Courtesy of Gerolf Poetschke Invisible text to format smartphones. xxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxx xxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx |