The MIlwaukee 2291-21 M12 Lithium-ion Sub Scanner Detection Tool is a heavy duty pistol grip detection tool for professional commercial and industrial applications. Powered by the Milwaukee M12 Red Lithium battery, the 2291-21 can detect rebar up to 6 in. deep in concrete, as well as the location of wood and metal studs beneath drywall. In addition, the M12 Lithium-ion Sub Scanner Detection Tool has a four wheel design for durability and smooth, accurate measurement. The 2291-21 is covered by the Milwaukee 5-year warranty.
- Measures depth and location of rebar up to 6 in. through concrete
- Detects location of wood and metal studs
- Differentiates between steel (ferrous) and copper or aluminum (non-ferrous) metals
- Intuitive user interface displays stud centers and edges
- High contrast white on black display and backlight for easy reading
- Rugged over-molding improves durability and user grip
- One button calibration for all surfaces
- Compatible batteries: compact (48-11-2401), extra capacity (48-11-2402)
- Compatible chargers: M12/M18 multivoltage (48-59-1812), M12 AC/DC (2510-20), M12 30 min. (48-59-2401)
Jamison Deckow (verified owner) –
I have owned this tool for a couple years now and have always been happy with the results when I use it. Yes, this tool does have some size to it as compared to the typical home use stud finder but it is much more than just a stud finder. As for as its weight, when you pick it up without the battery, you might think there is nothing inside the case. It’s not really heavy at all! I think Milwaukee did a good job with this tool. I don’t believe that Harry Homeowner was the target market when it was designed.
Natalie Little (verified owner) –
The tool may resemble a small Geiger meter but its light easy to operate. I’m glad I made the investment.I’d love to see a combination pin and pinless moisture meter like this.
Leanna Walker (verified owner) –
wall studs shud be plumb, i think the machine is correct. who builds wall studs crooked? works awesome even on pitched roof trusses and any type of floor joists
Carlee Feeney (verified owner) –
I have a drawer full of these devices, ranging from $15.00 – $40.00. I am a third generation Architectural wood worker /consultant. I am the first generation to have a device bigger than a magnet to locate studs in a wall. In the quest to get a stud finder that is accurate, I have recently ordered the blue competitors $1000.00 radar model, its blue $79.00 model, as well as this $250 radar model (much like the $1000.00 one). I have returned all of them except this radar model because it gave the best results. I have come to the conclusion that with all the variables one will run up against, nothing is going to give the results I require that I can’t accomplish by measure tape, nail and wall patch. This is what I experienced after trying on several different areas. Studs would appear, and then disappear, leaving doubt. But with this one, after learning a few things about how this unit uniquely calibrates I got some fair results. At least much better than any other manufactures devices. There is no electrical detect which I don’t know could it wasn’t added. I also pick this one because I have a high end woodshop and I need to scan for metallic objects prior to machining. This rates excellent for this and saves a ton of time and money preventing damage to cutterheads. For my needs I’m keeping this one. I do like the fact it uses the M12 battery system which is compatible with several other tools we have. The battery life is way excellent as well. The display is easy read and navigating the controls is easy for this old man (meaning I don’t need to get my 6 year old grandson to operate it for me).