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Press To Fold The Edges Of The Tube Sheets, Vintage Engraving.
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Oil Pump.
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Sec Meter, Invariable Measure, Vintage Engraving.
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Meter Factory Seen From Behind With Three Valves Available For Forming The Bypass, Vintage Engraving.
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Water Meter, Kennedy System; Section Along The Axis Of The Water Distribution Pipe, Vintage Engraving.