Holtzer-Cabot Brass-Bottom Long Pole Receiver
By Walt Aydelotte, ; posted September 21, 2010; hits 1186
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| Here are 2 Line Drawings (not photos) depicting Holtzer-Cabot's Brass-Bottom Long Pole Receiver. The "defining Characteristic", if you can call it that, is that these receivers were "factory tuned", and not able to be adjusted in the field for sensitivity. The round-head bolt you see on the Terminal end was to merely "attach" the Wafer and Terminals to the single-pole magnet, g.g., it did not provide for any Receiver adjustment. |