Metal Tapping Machine Diagram

Meanwhile, somewhere in the Antipodes, longstanding Hooting Yard rapporteur Glyn Webster has devised a diagram showing the development of the modern metal tapping machine. It should be noted that the metal tapping machines occasionally mentioned in these pages bear greater resemblance to the one in the top left corner than to the one at bottom right. Click on the picture for a larger image.

metaltappingmachine4-small.jpg

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