Period

2 results for: hardness

  • Page
  • of
  • 1
Please sign in for more results
Split Walnut Shell
GLS19A01_483

Split Walnut Shell

Two Female Workers Inspecting Heat-Treated Pistons prior to Brinnell hardness Testing at Aluminum Factory Converted to War Production, Aluminum Industries, Inc., Cincinnati, Ohio, USA, Alfred T. Palme...
GLS18A04_313

Two Female Workers Inspecting Heat-Treated Pistons...