Amazon.com has a Black & Decker BDL110S BullsEye Laser Level Stud Sensor for $13.17. Free Shipping on orders over $25.
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- Transmits level horizon lines and detects wood studs, metal studs, and live electrical wires n
- Automatically transmits two horizontal level lines (10 feet in each direction) n
- Hangs on walls for hands-free convenience while you work along the level line n
- Rubber-overmolded non-slip grips n
- Comes with a nylon case with foam protector insert; 2-year warranty