Secondary Electric Clock Small 294×320 Medium 588×640 Large 941×1024 Download Tiff Original 2206×2400 | (441.6 KB) Description This is a timepiece that shows the time of the day, using a small electric motor Keywords clock, electric clock, machine, time machine Galleries Miscellaneous Industrial Machinery Source: Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)
