What's inside
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The Bosch GLL3-330CG and DeWalt DCLE34030 are green-beam, three-plane lasers aimed at contractors who need to lay out walls, ceilings, tile, or cabinetry. Both project horizontal and vertical reference lines; the practical differences are how they’re powered, how they mount, and which jobsite ecosystem they fit. Check the exact kit before buying: included batteries, chargers, brackets, and cases vary by package.
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At a glance
| Feature | Bosch GLL3-330CG | DeWalt DCLE34030 |
|---|---|---|
| Layout | Three 360-degree green planes | Three 360-degree green planes |
| Beam color | Green | Green |
| Power | 12V rechargeable battery or AA batteries, depending on setup | 20V MAX battery platform |
| Self-leveling range | About 4 degrees | About 4 degrees |
| Typical accuracy rating | ±3/16 inch at 30 feet | ±1/8 inch at 30 feet |
| Best fit | Users who want flexible power options and Bosch’s layout accessories | Contractors already carrying DeWalt 20V batteries |
Specifications can vary by region or kit, so confirm the manual and package contents for the version you’re considering. Accuracy figures are not a substitute for checking the tool before a critical installation.
Layout and visibility
Each laser gives you three full 360-degree planes: one horizontal and two vertical. That lets you establish a level line around a room, plumb lines on perpendicular walls, or a reference across floor, wall, and ceiling without repeatedly moving the tool. For one-room layouts, this is more useful than a brighter beam alone.
Both use green beams, which are generally easier to see than red in bright indoor conditions. Neither should be treated as easy to see in direct sun or across a large outdoor site. Use a compatible laser receiver when working at longer distances or in strong light, and verify that the receiver is compatible with the tool’s pulse mode before purchase.
The Bosch’s stated accuracy is ±3/16 inch at 30 feet; DeWalt rates the DCLE34030 at ±1/8 inch at the same distance. That difference may matter for precision cabinetry or long runs, but it is not a guarantee that either unit will remain accurate after a drop, rough transport, or poor setup. Check a new or suspect laser with a simple 180-degree wall test before trusting it for finish work.
Power and jobsite fit
The Bosch stands out for power flexibility. Its 12V battery setup suits users already invested in Bosch’s compact platform, while AA backup can keep a layout job moving if the rechargeable pack is flat. The backup option adds convenience, but it is not a reason to ignore battery checks on a full day of work.
DeWalt’s main advantage is straightforward for crews using 20V MAX tools: one battery platform, with packs likely already in the gang box. The trade-off is a larger, heavier battery system than a compact laser-specific pack. If you only need a laser occasionally, buying into a battery platform just for this tool can make the DeWalt kit less economical than its bare-tool price suggests.
Both tools self-level when placed within their operating range, roughly 4 degrees. If the unit is tilted beyond that, it warns rather than giving a trustworthy level line. Set it on stable ground or a secure mount; a bumped tripod or a door slamming nearby can spoil layout without being obvious. Lock the pendulum for transport, and don’t assume a magnetic bracket is safe on a surface that can flex or vibrate.
Mounting and controls
For overhead work, the quality of the mount often matters as much as the laser. A ceiling track, tripod, or clamp can save time, but a poorly placed bracket can put the plane at the wrong height or let it shift while you mark. Compare the included mounting hardware in the exact package: bare tools and full kits are not interchangeable in value.
The Bosch is a natural pick if you use its compatible mounting accessories or want AA backup. DeWalt makes more sense if you already own 20V batteries and prefer to keep charging and spares within one system. Before ordering, check whether the selected kit includes a battery and charger, a hard case, and the bracket you need for your usual work.
Which one should you buy?
Choose the Bosch GLL3-330CG if you value flexible power, already own Bosch 12V equipment, or want to use Bosch’s mounting options. Its accuracy rating is adequate for most framing, partition, and general interior layout. The AA fallback can be useful on a service call, though you should confirm the battery configuration supported by your specific unit.
Choose the DeWalt DCLE34030 if your crew already runs DeWalt 20V batteries and the tighter published accuracy figure is useful for your work. The larger battery platform is less of a drawback when packs and chargers are already on site. For occasional DIY or basic room layout, it may be unnecessary to pay extra for a laser simply because it matches a professional battery system.
If neither platform is already in your shop, compare complete kits rather than bare-tool prices. A green 3-plane 360-degree laser from another established line may cost less and still cover ordinary interior work. For outdoor layout, prioritize receiver compatibility over beam color, and budget for a receiver if one is not included.
Before you buy
Think about the work distance, ambient light, mounting method, and battery system first. A green beam helps indoors but does not remove the need for a receiver outdoors. Three planes speed up multi-wall layouts, yet they add little value if you only mark a single level line now and then.
Whichever tool you choose, check calibration periodically, protect it from impacts, and let it settle on a stable surface before marking. For tile, cabinets, or trim where small errors accumulate, confirm the line against a known reference and recheck after moving the laser. A reliable setup and a quick verification prevent more rework than choosing between two good green lasers on paper.