A stud finder is a small device that allows one to identify where wooden or metal beams exist underneath walls. This can assist one in finding good places to use nails or picture hangers. Often sheet rock without a stud behind it easily yields to even a pushpin. On the other hand, sheet rock with a stud behind it can cause difficulties in attempting to stick in that pin.

Generally a stud finder is of one of two types. An electronic stud finder notes differences in density to identify a wooden beam behind the wall. A magnetic stud finder finds metal studs, and also may be helpful in identifying when screws or nails are on wooden stud. Usually both types of stud finder are small handheld devices that use batteries to perform this operation.

A stud finder may beep, or some have a small viewer screen with readings that help one easily locate the stud. Generally one hears a beep that helps one identify the stud so one can secure items safely. This is more efficient and less damaging to the walls than nailing everywhere until one gets lucky and finds a stud.

You may be able to locate a stud by sound. Knocking on the wall against a stud will yield a dull sound. Conversely, rapping the wall where there is no stud will sound somewhat hollow. This method can also help one use the stud finder more efficiently. It helps to know where to look.

Locating a stud with a stud finder can be necessary when one wants to hang something heavy. A large picture, or a new plasma television is likely to pull out of the wall and easily become unsecured if it is not secured to the studs or beams behind the wall. The stud finder also makes hanging curtains or blinds easier. These tend to pull out of walls unless secured to studs surrounding the window.

In any location with frequent earthquakes, being able to use a stud finder allows one to secure tall large furniture, like bookcases, as well as heavy items. Securing heavy tall furniture to studs is a helpful step in being prepared for an earthquake, as these items are less like to fall forward during moderate quakes,

There are many different companies that make both types of stud finders. Generally, they are quite moderate in price, ranging from about 20-30 US dollars (USD). Most people find them to be a great investment as they take the guesswork out of finding studs for securing heavy items.