Description
Polythene extrusion and cooling. Photo caption: STC Photograph. Dec 1970. Control position for polythene extrusion and gradual cooling process where the insulant core is extruded in excess of 1.47" diameter over lengths approaching 80 nautical miles during the manufacture of submarine telephone. This item is part of the MoDiP BXL collection.
Object number
BXL : 1349