Photograph showing lead burning operations: upright lead burning. "LEAD BURNING BY OXY-ACETYLENE. Burning an Upright Seam (See Speciment). Presented by Messrs. Allen Liversidge Ltd. Victoria Station House. SW1".
Photograph showing lead burning operations: upright lead burning. "LEAD BURNING BY OXY-ACETYLENE. Underhand burning of a Horizontal Lapped Seam. (see Specimen). Presented by Messrs. Allen Liversidge Ltd. Victoria Station House. SW1".
Photograph showing lead burning operations: upright lead burning. "LEAD BURNING BY OXY-ACETYLENE. Burning the Joint on a Branch Pipe. (see Specimen). The cylinders, connections etc. being used are those of the portable outfit exhibit. Presented by Messrs. Allen Liversidge Ltd. Victoria Station House. SW1".