Tech & Gadgets · Head-to-head
Bosch GLL3-330CG 360 Degree Three-Plane Green Line Laser vs Huepar ZK03CG Pro 3x360 Degree Green Cross Line Laser
Which should you buy? Our verdict on both, pulled from our full The Best Laser Levels: 4 Compared (and One to Skip) comparison.
The GLL3-330CG is the only tool here whose maker publishes accuracy in both conventions on the same line, plus or minus 3/32 inch at 30 feet and plus or minus 2.40 mm at 10 m, so there is nothing to reverse engineer. The Huepar ZK03CG states a tighter figure at 10 m and adds an audible out-of-range alert, and it costs a good deal less, which makes it the sensible choice if you are not buying into a battery platform.
Bosch GLL3-330CG 360 Degree Three-Plane Green Line Laser
Buy itThe best-documented 360 degree green line laser here, with accuracy published in both inches-at-a-distance and millimetres-at-10-metres.
- Bosch publishes levelling accuracy as plus or minus 3/32 inch at 30 feet and plus or minus 2.40 mm at 10 m, so the distance is never in doubt.
- Receiver mode pulses the lines at high frequency for the LR8 detector, taking the working range from a 200 ft diameter to a 330 ft diameter.
- Runs on a 12 V Max lithium-ion pack or on four AA cells through an adapter, so a dead battery does not end the day.
- IP54 only, which is splash protection rather than the IP65 jet protection Stabila publishes.
- Bosch states the green version gets 6 hours from the BAT414 pack against 8 hours for the identical red model, so the green beam costs you runtime.
- Bosch publishes no drop rating for it at all, only the instruction to recheck accuracy after any heavy impact.
Huepar ZK03CG Pro 3x360 Degree Green Cross Line Laser
Buy itStates a tighter accuracy figure than the Bosch and backs it with a beep as well as a flashing line when it goes out of range.
- Levelling accuracy is stated plainly as plus or minus 2 mm at 10 m, which is the easiest figure in this group to compare against anything else.
- It beeps and flashes the line when tipped past its plus or minus 3 degree compensation range, so the warning is audible as well as visual.
- Huepar publishes an operating range of minus 10 C to plus 50 C, a wider window at the top end than either Bosch or Stabila states.
- The self-levelling range is plus or minus 3 degrees against plus or minus 4 degrees for the other three, so it is fussier about where you stand it.
- IP54, and Huepar publishes no drop rating.
- Every figure here is Huepar's own declaration, with no third-party test report published alongside it.
Side by side
| Bosch GLL3-330CG 360 Degree Three-Plane Green Line Laser | Huepar ZK03CG Pro 3x360 Degree Green Cross Line Laser | |
|---|---|---|
| Our verdict | Buy | Buy |
| Best for | Anyone who wants one 360 degree tool for full-room layout and wants every number they are relying on printed in the maker's own manual. | A DIY user or a one-tool tradesperson who wants three 360 degree planes and a rechargeable pack without buying into a power tool battery system. |
| Price tier | $$$ · premium | $$ · mid-range |
The bottom line
Our overall pick is the Bosch GLL3-330CG 360 Degree Three-Plane Green Line Laser - The best-documented 360 degree green line laser here, with accuracy published in both inches-at-a-distance and millimetres-at-10-metres. Choose the Huepar ZK03CG Pro 3x360 Degree Green Cross Line Laser instead if a DIY user or a one-tool tradesperson who wants three 360 degree planes and a rechargeable pack without buying into a power tool battery system.
Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Laser Levels: 4 Compared (and One to Skip).