Bosch
Bosch GMS 120 Professional Digital Multi-Scanner
$109.48
Best Stud Finders · head-to-head
Bosch GMS 120 Professional Digital Multi-Scanner vs Tavool TH250 4-in-1 Wall Stud Finder
A sourced, side-by-side comparison. Tavool TH250 4-in-1 Wall Stud Finder is cheaper at $15.99. Every spec and price links to its source.
Tavool
Tavool TH250 4-in-1 Wall Stud Finder
$15.99Cheaper
Which is better: the Bosch GMS 120 Professional Digital Multi-Scanner or Tavool TH250 4-in-1 Wall Stud Finder?
On the specs we track, they're closely matched. The Tavool TH250 4-in-1 Wall Stud Finder is the cheaper at $15.99.
See Bosch GMS 120 Professional Digital Multi-Scanner on Amazon See Tavool TH250 4-in-1 Wall Stud Finder on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Bosch GMS 120 Professional Digital Multi-Scanner |  Tavool TH250 4-in-1 Wall Stud Finder |
|---|---|---|
| US price | $109.48 | $15.99 |
| Brand | Bosch | Tavool |
| Released | — | — |
| Max scan depth (in) | 4.75 | 2.36 |
| Sensing technology | capacitive/inductive multi-mode with automatic calibration; illuminated status ring (green/orange/red) | electronic density-change sensing (capacitance) |
| Detects wood metal live wire | wood studs, ferrous metal to 4.75 in., non-ferrous metal to 3.125 in., live AC wiring to 2 in. | wood studs, metal studs/rebar (to 2.36 in.), live unshielded AC wire (to 2 in.) |
| Sensor array width (in) | — | — |
| Center vs edge find | automatic center finder for detected objects | center and edge find with directional LCD indicators |
| Display type | illuminated graphical display | LCD screen with stud center/edge markers, battery and wire-warning icons |
| Calibration method | automatic calibration in each of 3 modes (wood/metal/AC) | press and hold Scan button before each session; tool must remain still while calibrating |
| Power source | 9V battery (included) | 1x 9V battery (not included) |
Sources — Bosch GMS 120 Professional Digital Multi-Scanner: boschtools.com (recorded 2026-08-05). Tavool TH250 4-in-1 Wall Stud Finder: manualslib.com (verified 2026-08-05).
What's the difference between the Bosch GMS 120 Professional Digital Multi-Scanner and Tavool TH250 4-in-1 Wall Stud Finder?
Where the two actually differ on the specs we track (7 of 8). Matching specs are omitted.
- Max scan depth (in): Bosch GMS 120 Professional Digital Multi-Scanner 4.75 vs Tavool TH250 4-in-1 Wall Stud Finder 2.36
- Sensing technology: Bosch GMS 120 Professional Digital Multi-Scanner capacitive/inductive multi-mode with automatic calibration; illuminated status ring (green/orange/red) vs Tavool TH250 4-in-1 Wall Stud Finder electronic density-change sensing (capacitance)
- Detects wood metal live wire: Bosch GMS 120 Professional Digital Multi-Scanner wood studs, ferrous metal to 4.75 in., non-ferrous metal to 3.125 in., live AC wiring to 2 in. vs Tavool TH250 4-in-1 Wall Stud Finder wood studs, metal studs/rebar (to 2.36 in.), live unshielded AC wire (to 2 in.)
- Center vs edge find: Bosch GMS 120 Professional Digital Multi-Scanner automatic center finder for detected objects vs Tavool TH250 4-in-1 Wall Stud Finder center and edge find with directional LCD indicators
- Display type: Bosch GMS 120 Professional Digital Multi-Scanner illuminated graphical display vs Tavool TH250 4-in-1 Wall Stud Finder LCD screen with stud center/edge markers, battery and wire-warning icons
- Calibration method: Bosch GMS 120 Professional Digital Multi-Scanner automatic calibration in each of 3 modes (wood/metal/AC) vs Tavool TH250 4-in-1 Wall Stud Finder press and hold Scan button before each session; tool must remain still while calibrating
- Power source: Bosch GMS 120 Professional Digital Multi-Scanner 9V battery (included) vs Tavool TH250 4-in-1 Wall Stud Finder 1x 9V battery (not included)