Bosch
Bosch GMS 120 Professional Digital Multi-Scanner
$109.48
Best Stud Finders · head-to-head
Bosch GMS 120 Professional Digital Multi-Scanner vs Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder
A sourced, side-by-side comparison. Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder is cheaper at $34.98. Every spec and price links to its source.
Klein Tools
Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder
$34.98Cheaper
Which is better: the Bosch GMS 120 Professional Digital Multi-Scanner or Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder?
On the specs we track, they're closely matched. The Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder is the cheaper at $34.98.
See Bosch GMS 120 Professional Digital Multi-Scanner on Amazon See Klein Tools ESF200 Multi-Scan Center and Edge 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 | Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder |
|---|---|---|
| US price | $109.48 | $34.98 |
| Brand | Bosch | Klein Tools |
| Released | — | — |
| Max scan depth (in) | 4.75 | 2 |
| Sensing technology | capacitive/inductive multi-mode with automatic calibration; illuminated status ring (green/orange/red) | electronic capacitance sensing with LED indicators |
| 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 (to 0.75 in.), metal (to 1.5 in.), live AC voltage (to 2 in.) |
| Sensor array width (in) | — | — |
| Center vs edge find | automatic center finder for detected objects | center and edge find ("Multi-Scan" full-width detection) |
| Display type | illuminated graphical display | LED indicators |
| Calibration method | automatic calibration in each of 3 modes (wood/metal/AC) | automatic calibration; no manual adjustment required |
| Power source | 9V battery (included) | 2x AAA alkaline batteries (included) |
Sources — Bosch GMS 120 Professional Digital Multi-Scanner: boschtools.com (verified 2026-08-05). Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder: kleintools.com (verified 2026-08-05).
What's the difference between the Bosch GMS 120 Professional Digital Multi-Scanner and Klein Tools ESF200 Multi-Scan Center and Edge 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 Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder 2
- Sensing technology: Bosch GMS 120 Professional Digital Multi-Scanner capacitive/inductive multi-mode with automatic calibration; illuminated status ring (green/orange/red) vs Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder electronic capacitance sensing with LED indicators
- 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 Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder wood (to 0.75 in.), metal (to 1.5 in.), live AC voltage (to 2 in.)
- Center vs edge find: Bosch GMS 120 Professional Digital Multi-Scanner automatic center finder for detected objects vs Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder center and edge find ("Multi-Scan" full-width detection)
- Display type: Bosch GMS 120 Professional Digital Multi-Scanner illuminated graphical display vs Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder LED indicators
- Calibration method: Bosch GMS 120 Professional Digital Multi-Scanner automatic calibration in each of 3 modes (wood/metal/AC) vs Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder automatic calibration; no manual adjustment required
- Power source: Bosch GMS 120 Professional Digital Multi-Scanner 9V battery (included) vs Klein Tools ESF200 Multi-Scan Center and Edge Stud Finder 2x AAA alkaline batteries (included)