The Spider Crane:
Appearance: A small-sized crane that relies on 4 hydraulic legs for stability (resembles a spider).
Task: Reaching "impossible" places (very narrow, elevated roofs, or inside rooms).
Movement: Travels on rubber tracks, and passes through normal doors and elevators.
Strength: Lifts heavy weights (up to several tons) despite its small size.
Operation: Mostly remote-controlled and runs on electricity or diesel.