Assertion: airway beacon | /r/HasProperty | built by the sperry gyroscope company
Facets:
Source sentences:
text: Built by the Sperry Gyroscope Company and installed on a high steel tower on the roof, the five foot in diameter, 1.2 billion candles in power, airway beacon is officially lit by Clarence D. Chamberlin, transatlantic flier and the city's airport engineer, at 10 pm on July 12, 1928 to christen the building.