wrench
From the novel Monopole.
[a defining sentence]
After a moment, Teddy sets down the wrench, commands the machine to generate him a sturdy, reusable filter mask and ten packs of filters (which he shoves into the various pockets he finds hidden throughout his proofwear coat), and walks back to the door leading from the service station, part of him wanting to experiment more with the object generator, but most of him yearning to find Sylvie—or to at least find out how he got here and what the hell is going on.