Walabot DIY, Stud Finder In-Wall Imager

Amazon has the Walabot DIY, Stud Finder In-Wall Imager in $49.95 with free shipping.

Product Features:

• Detects wood & metal studs, PVC & metal pipes, electric cables and wires inside walls.
• Scans up to 4 inches (10 centimeters).
• Works with Android phones.
• Not compatible with iPhone and iPads and tablets.