Copper tube with spiral marks from drawing through the die

Made:
before 1889
Piece of copper tube on the surface of which appear spiral

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Piece of copper tube on the surface of which appear spiral
Science Museum Group
© The Board of Trustees of the Science Museum

Piece of copper tube on the surface of which appear spiral marks caused by drawing through the die

Details

Category:
Metallurgy
Object Number:
1889-164/969
type:
tube
credit:
John Percy Collection