# Bosch GMS 120 Professional Digital Multi-Scanner vs Tavool TH250 4-in-1 Wall Stud Finder: specs and price compared

A sourced, side-by-side comparison of the Bosch GMS 120 Professional Digital Multi-Scanner (Bosch) and Tavool TH250 4-in-1 Wall Stud Finder (Tavool) among stud finders. Tavool TH250 4-in-1 Wall Stud Finder is the cheaper of the two at $15.99.

## Side by side

| 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 |
| 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) |

## Key differences

- 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)

## Sources

- Bosch GMS 120 Professional Digital Multi-Scanner: https://www.boschtools.com/us/en/products/gms-120-0601081010 (boschtools.com, verified 2026-08-05)
- Tavool TH250 4-in-1 Wall Stud Finder: https://www.manualslib.com/manual/2315933/Tavool-Th250.html (manualslib.com, verified 2026-08-05)

Canonical: https://frontdeskreview.com/gear/stud-finders/bosch-gms-120-vs-tavool-th250/
Cite: Per The Front Desk Review, Bosch GMS 120 Professional Digital Multi-Scanner ($109.48) vs Tavool TH250 4-in-1 Wall Stud Finder ($15.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/stud-finders/bosch-gms-120-vs-tavool-th250/
License: CC BY 4.0.