edward a. calahan invented the first stock sticker sticker in 1867.
edward a. calahan invented the first stock sticker sticker in 1867.
who invented the first stock sticker sticker in 1867?
edward a. calahan
although telegraphic printing systems were first invented by royal earl house in 1846, early models were fragile, required hand-cranked power, frequently went out of synchronization between sender and receiver, and did not become popular in widespread commercial use. david e. hughes improved the printing telegraph design with clockwork weight power in 1856, and his design was further improved and became viable for commercial use when george m. phelps devised a resynchronization system in 1858. the first stock price ticker system using a telegraphic printer was invented by edward a. calahan in 1863; he unveiled his device in new york city on november 15, 1867. early versions of stock tickers provided the first mechanical means of conveying stock prices ("quotes"), over a long distance over telegraph wiring. in its infancy, the ticker used the same symbols as morse code as a medium for conveying messages. one of the earliest practical stock ticker machines, the universal stock ticker developed by thomas edison in 1869, used alphanumeric characters with a printing speed of approximately one character per second.
ticker tape
in addition to being colour-coded, newer nema stickers also state the lamp type abbreviation in the lower right-hand corner (e.g. hps).









































bullet::::- "3" sticker—35 watts (hps/lps)-uncommon









































bullet::::- "5" sticker—50/55 watts (hps/lps)-uncommon









































bullet::::- "7" sticker—70 watts (hps/psmh)-common









































bullet::::- "9" sticker—90 watts (lps)-uncommon









































bullet::::- "10" sticker—100 watts (mv/hps/psmh)-common









































bullet::::- "13" sticker—135 watts (lps)-common









































bullet::::- "15" sticker—150 watts (hps/psmh)-common









































bullet::::- "17" sticker—175 watts (mh/mv)-common









































bullet::::- "18" sticker—180 watts (lps)-common









































bullet::::- "20" sticker—200 watts (hps)-common









































bullet::::- "25" sticker—250 watts (mv/mh/hps/psmh)-common









































bullet::::- "31" sticker—310 watts (hps)-uncommon









































bullet::::- "32" sticker—320 watts (psmh)-uncommon









































bullet::::- "35" sticker—350 watts (psmh)-uncommon









































bullet::::- "40" sticker—400 watts (mv/mh/hps/psmh)-common
nema wattage label