Fort Jackson, SC 1941. Signal Corps Temporary Pole Using IN-56-style Insulators.
By Joe Maurath, Jr.; posted October 20, 2019
View Original: Click to zoom, then click to magnify(459 x 439) 392KB
View of pole once into position. A hinge at each end of the three poles lifted the crossarm into position.
Click "Previous" for a close view of the crossarm and the hinges that supported it.