2021-02 Raynors HCA Live
This lot is closed for bidding. Bidding ended on 2/6/2021
Stereoview "The Heliograph Station - signaling between land and naval forces - near Pasay, P.I." 1899 Underwood & Underwood copyright. Very good condition. The heliograph was a simple but effective instrument for instantaneous optical communication over long distances during the late 19th and early 20th century. Its main uses were military, survey and forest protection work. Heliographs were standard issue in the British and Australian armies until the 1960s, and were used by the Pakistani army as late as 1975.
Click on a thumbnail above to display a larger image below
Hold down the mouse button and slide side to side to see more thumbnails(if available).
Click above for larger image.