Possible Clues:

• Tool for workmen making bridge
• Tightening tool
• Wrench small one taken from cycle bag
• Tool causing catastrophe in works?
• Tool to measure energy new refrigerator initially consumes
• Wrench-like tool
• One goes across, apparently, and one can turn either way
• One causing disruption in the works?
• Tool causing trouble in works?
• Hand tool, last of his I removed from bag