The trouble is that stud finders are designed to pick up on the difference between sheetrock with airinsulation behind it and sheetrock with wood behind it neither of which is going to match concrete or concrete with rebar so it might not be sensitive in this range. You can use it to find plumbing nails screws and ductwork in all your home including walls ceilings and floors.

Zircon Metalliscanner Mt 6 Electronic Metal Locator Testing
Will a stud finder find rebar in concrete. For more information about. 152 mm deep in concrete and other non metallic surfaces. A rebar locator looks similar to a stud finder and has a flat side that sits flush against the concrete so you can move it around easily. Find ferrous and non ferrous metal up to 6 in. 8 in localization accuracy. It can also detect live ac wiring metal.
Rebar and concrete definitely have very different dielectric constants. Of non metallic construction materials eliminating guesswork and breakage of costly drill bits. The zircon corporation metalliscanner mt6 metal locator scans through up to 6 in. Use to find or avoid rebar in concrete before drilling. Handheld locators usually only detect rebar thats 68 inches 1520 cm deep. Concrete detector for rebar localization depth measurement and size estimation in structural analysis max.
Expensive if you only need a stud finder boschs gms 120 is much more than a stud finder though it did locate the centers to within an eighth of an inch. It not only works as a stud finder but it can also find rebar in concrete. Rebar locators usually cost around 200 usd when you buy them. Concrete and electrical contractors can use it to find rebar in concrete floors driveways roads and partitions. Normal scan for shallow rebar placed in tight grid patterns and deepscan for deeper pieces of pipe or rebar. Use the metalliscanner mt 6 to find or avoid rebar cables pipe nails in reclaimed wood nailstacks in studs behind lath plaster walls electrical boxes and conduit and more.
Besides its main purpose the tool serves multiple alternative tasks. Professional stud finders thermal cameras and wall scanners which detect live ac wiring rebar metals wood wall studs nails and plastic pipes. Detection depth for object localization.