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- something which adheres to and crawls upon vertical surfaces
- 2004, “Remote Testing of Underground High Level Radioactive Waste Storage Tanks”, in Materials Evaluation, volume 62, American Society for Nondestructive Testing, ISSN 0025-5327, page 917:
- The wall crawler... is a commercially available crawler, which attaches to the steel tank wall through strong, permanent magnetic wheels.
- 2009 March 3, Turse, Nick, The Complex: How the Military Invades Our Everyday Lives, New York: Metropolitan Books, →ISBN, page 243:
- This weaponized wall crawler, assumedly capable of creeping into some 2025 apartment window in Baghdad, Beruit, or Kerachi "carrying a combat load," definitely is not meant to be your friendly neighborhood Spiderman.