Maker John Blake created StudPoP magnetic stud finders after he found the (many) electronic versions he tried to be lacking.

John noticed electronic stud finders were often inaccurate, so his simplified tools don’t need batteries or calibration to work. Just run one along a wall, and the indicator will pop up and click. Integrated magnets do a better job locating studs than electronic ones that can struggle with thicker walls found in older homes. StudPoP can detect a metal fastener in a stud through a wall up to half an inch deep. Now hanging things like a mirror, picture frame, or shelves is easier, in any type of space.