CH Hanson 03040A Magnetic Stud Finder with Level
- Material Type: Blend
- Color: Yellow
- Unit Count: 1
- Number Of Items: 1
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A dependable low-tech pick for anyone who wants a stud finder that is always ready, at the cost of needing a nail or screw nearby to detect.
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ASIN: B08DY3MKXQModel: 03040ACategory: Stud Finders
Overview
The CH Hanson 03040A is a battery-free magnetic stud finder that uses rare earth magnets to locate the nails and screws holding drywall to studs. A built-in rotating level marks lines for shelves, TVs, and frames. Suits homeowners who want a tool that works the moment it is picked up.
Unlike electronic stud finders, this one has nothing to calibrate and nothing to charge: strong magnets pull toward the metal fasteners already in the wall, and that pull is the signal. It trades the constant readout of an electronic scanner for a slower, sweep-and-feel method that never runs out of battery.
- Rare earth magnets locate embedded nails and screws
- No batteries, charging, or calibration needed
- Built-in rotating level for marking lines
- Weighs 0.15 lb for tool belt or pocket carry
Who it's for
Good for homeowners and renters hanging shelves, mirrors, or a TV mount who want a tool that works right out of the pouch. Less suited to anyone framing a wall or needing to see the full width of a stud, since it can only find the fastener, not the wood itself.
Pros and cons
- Works with no batteries or calibration needed
- Pocket-sized at 0.15 lb
- Built-in level marks lines from the find point
- Backed by a limited lifetime warranty
- Only detects existing metal fasteners, not the stud itself
- No live-wire warning feature
- Less useful on walls with sparse or unusual fastener spacing
Performance notes
The magnets pull toward metal fasteners as you sweep the tool across the wall; when it snaps toward the surface, there is a nail or screw, and likely a stud, behind that spot. The built-in rotating level then lets you mark a straight horizontal or vertical line from that point without switching tools. Because it finds fasteners rather than sensing density or edges, it works best on walls with standard drywall screw or nail patterns.
Specifications
| Brand | CH Hanson |
|---|---|
| Model | 03040A |
| Construction & materials | |
| Material Type | Blend |
| Color | Yellow |
| Included components | |
| Unit Count | 1 |
| Included Components | Item |
| Other details | |
| Number Of Items | 1 |
| Style Name | Classic |
| Operation Mode | Manual |
Frequently asked questions
Does the CH Hanson 03040A need batteries?
No, it uses rare earth magnets to detect metal fasteners, so it works without batteries or calibration.
Can it detect live AC wires?
No, this magnetic design finds nails and screws in studs and has no electrical wire detection.
What is the CH Hanson stud finder typically used for?
Mounting TVs, shelves, cabinets, mirrors, and artwork where you need a reliable mounting point.