Calculated Industries is a compact nail and screw finder. The device is equipped with a removable magnetic base for easy operation on different surfaces. The finder can detect elements up to 19mm deep, allowing you to work confidently on different types of walls. The magnets snap onto the head of a screw or nail, using markers the user can mark the location of a metal element and move on to search for others. Three positions can be worked on simultaneously. The small dimensions of 8.9 x 3.8 x 2.5 cm and a weight of about 80 grams make it light and comfortable to use, ideal for use both at home and on construction sites. Detecting the object, the tool sticks to the wall, leaving the craftsman's hands free.