Search results
Results From The WOW.Com Content Network
The Magnetic Signal Company was an American company based in Los Angeles, California, focused on railway signalling. The company was the manufacturer of the ubiquitous "Magnetic Flagman" wigwag railroad crossing (or level crossing ) signal, seen all over California and the western states.
A Magnetic flagman wigwag signal in use in southern Oregon, June 2007. Wigwag is a nickname for a type of railroad grade crossing signal once common in North America, referring to its pendulum-like motion that signaled a train's approach.
The usual wigwag code was ternary, that is, there were three different motions (symbols) that could be displayed. However, only two of these symbols were used for letters, making it largely binary. The third symbol only appeared in control characters. The neutral position was the signalman holding the flag vertically and motionless above his head.
Stock name Symbol Country of origin Nabors Industries: NBR: United States: NACCO Industries: NC: United States: Nam Tai Property Inc. NTP: Hong Kong: National Bank Holdings Corporation NBHC: United States: National Bank of Greece: NBG: Greece: National Fuel Gas: NFG: United States: National Grid plc: NGG: United Kingdom: National Health ...
U.S. Army Signal Corps station on Elk Mountain, Maryland, overlooking the Antietam battlefield.. The Signal Corps in the American Civil War comprised two organizations: the U.S. Army Signal Corps, which began with the appointment of Major Albert J. Myer as its first signal officer just before the war and remains an entity to this day, and the Confederate States Army Signal Corps, a much ...
This image is from the AIGA symbol signs collection which was produced through a collaboration between AIGA and the U.S. Department of Transportation (DOT) in 1974 and 1979. All images in the collection are public domain .
Wigwag (railroad), a type of railroad grade crossing signal; Wigwag (flag signals), a type of flag signal; Wig-wag (sound stage), a red light indicating filming is in progress; Wig-wag (automobile), headlight flasher; Wig wag (truck braking systems), a mechanical arm indicating low brake pressure
A ticker symbol or stock symbol is an abbreviation used to uniquely identify publicly traded shares of a particular stock or security on a particular stock exchange. Ticker symbols are arrangements of symbols or characters (generally Latin letters or digits) which provide a shorthand for investors to refer to, purchase, and research securities.