The World's Smallest Open-End Wrench Above, you see the smallest open-end wrench in the world with 0.005 inch across the flats on one end, and 0.010 inch across the other. The grains of salt next to the wrench give a comparative size. The wrench was made with an Agie Vertex EDM using 0.0008 inch ultra-fine tungsten wire. - Marsh Syverson (President of Engineering Techniques, Inc.) |
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