Footage from inside optical glass making factory. Italy.
Unused / unissued material - dates and locations unclear or unknown.
Optical glass making. Italy.
MS Rotating instrument with man emptying powder into it. MS Men by side of large drums. CU Large pipe-like cases, used in the manufacture. MS Large box revolving between supports. CU Powdered glass being put into crucible. MS Crucible being put into oven. MS Machinery which keeps the crucible moving. MS Crucible in oven. CU Large, solid blocks of glass being broken up. CU Man handling block of glass which he breaks by tapping with a mallet. MS and CU Man weighing small pieces of glass.
CU Glass being ground. CU Pan over boxes of different types of glass. MS Man putting small piece of glass into highly-heated electrical oven. CU Piece being removed from oven. CU Pieces of glass being put into a sprectro-geniome for checking and measuring. CU Pan over blocks of glass. MS Man putting small block of glass on table. CU Block of glass being picked up. CU Glass being ground. CU Another process in the glassmaking. MS Optical instruments in use. CU Pan over glass shapes for various instruments.