With the Lumber Wizard 4 Laser Line Woodworking Metal Detector, Wizard Industries has improved the detection capacity and precision of their tool designed to help woodworkers find nails, screws and other metal objects in all types of wood. The Lumber Wizard 4 uses a bright red laser line, which visually detects metal up to 4 inches deep, along with a sound indicator. Designed for one-handed use, the Lumber Wizard 4 has a suggested retail price of $149.95.