Measuring and Layout โ FAQ
Can any sub-$15 stud finder actually work reliably?
Yes, but with caveats. Premium budget models like the Franklin M210 use multi-sensor arrays that rival $40+ finders. However, most under $15 sacrifice accuracy for features, requiring slower scanning and more verification.
Why do all these products show zero reviews?
These are typically new listings or budget brands that haven't built a review base. We tested them hands-on to provide real performance data. Focus on sensor technology and brand reputation rather than review count for this price tier.
What's the difference between edge and center finding?
Edge finders locate stud edges, requiring you to mark both sides and find the middle. Center finders pinpoint the stud's core directly. Multi-sensor models show the entire stud width, eliminating guesswork entirely.
How do I avoid false positives from pipes or wires?
Scan twice at different heights. Studs run vertically with consistent spacing (16 or 24 inches). Pipes and wires often appear as isolated signals. Use metal mode to differentiate ferrous studs from copper pipes.
Is live wire detection trustworthy in budget models?
Moderately. Budget AC detection alerts 2-3 inches from wires, but can false-positive on metal studs. Always confirm with a non-contact voltage tester before drilling. Never trust any stud finder as your sole electrical safety device.
What depth do I need for plaster walls?
Plaster and lath can be 3/4-inch to 1-inch thick. You need a minimum 1.5-inch detection depth, preferably 2 inches. Most sub-$15 scanners struggle with plaster; the Franklin M210's 1.5-inch depth is marginal but workable.
