Bosch GLL 3-80 vs GCL 2-50 UK: Which Laser Level Should You Buy?
The Bosch GLL 3-80 and GCL 2-50 are two of Bosch Professional’s most popular red laser levels, and they cost a similar amount. They do quite different jobs, though. Here is how GLL 3-80 vs GCL 2-50 compares, and which one suits your trade.
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Buy the GLL 3-80 if you need lines all the way around a room, for kitchens, ceilings, partitions and tiling, as it projects three 360 degree lines. Buy the GCL 2-50 if you need plumb points for transferring marks from floor to ceiling, such as for downlights, partitions and electrical work, or want a longer battery life.
GLL 3-80 vs GCL 2-50 at a Glance
| Feature | Bosch GLL 3-80 | Bosch GCL 2-50 |
|---|---|---|
| Projection | 3 x 360° lines (1 horizontal, 2 vertical) | Cross lines plus 2 plumb points (up and down) |
| Laser colour | Red | Red |
| Working range without receiver | 30 m | 15 m |
| Working range with receiver | 120 m (LR 6 or LR 7) | 50 m (LR 6 or LR 7) |
| Levelling accuracy | ±0.3 mm/m | ±0.3 mm/m |
| Self-levelling range / time | ±4° / 4 s | ±4° / 4 s |
| Batteries | 4 x AA | 3 x AA |
| Max run time | Up to 4 h (all 3 lines) | Up to 16 h (line mode) |
| Protection | IP54 | IP54 |
| Weight | About 0.82 kg | About 0.49 kg |
| Bosch UK price (Nov 2026) | About £338 inc VAT | About £209 inc VAT |
The Key Differences
What it projects
The GLL 3-80 projects three full 360 degree lines: one horizontal and two vertical at right angles. That means you can set one laser in the middle of a room and see level and square lines on every wall, which is ideal for kitchen fitting, ceilings and tiling. The GCL 2-50 projects a horizontal and vertical cross line plus two plumb points, one up and one down, which is the quickest way to transfer a point from the floor to the ceiling.
Range
Bosch lists the GLL 3-80 at 30 m without a receiver and 120 m with one. The GCL 2-50 is listed at 15 m without a receiver and 50 m with one. For most indoor work either is enough, but the GLL 3-80 is better in large open rooms and commercial spaces.
Battery life and weight
The GCL 2-50 lasts much longer: Bosch lists up to 16 hours in line mode on three AA batteries, against up to 4 hours with all three lines on for the GLL 3-80 on four AA batteries. The GCL 2-50 is also lighter at about 0.49 kg against 0.82 kg.
Price and toughness
On Bosch’s UK site the GCL 2-50 is about £130 cheaper than the GLL 3-80. Both are IP54 rated against dust and splashes, and both have the same ±0.3 mm/m accuracy. Check exactly what is in the box on the listing you buy, as Bosch sells both in several kits.
The Two Bosch Lasers
1. Bosch GLL 3-80
Best for lines around the whole room3 x 360 degree red lines, 30 m range (120 m with receiver), ±0.3 mm/m accuracy, IP54, four AA batteries.
2. Bosch GCL 2-50
Best for plumb points and battery lifeCross lines plus up and down plumb points, 15 m range (50 m with receiver), ±0.3 mm/m accuracy, up to 16 hours in line mode, IP54. This listing is in a case with three AA batteries.
Which Should You Buy?
- Kitchen fitters, tilers and ceiling fixers: GLL 3-80.
- Electricians and partition installers transferring points: GCL 2-50.
- Working outdoors or in bright light: consider a green laser, see our best laser levels guide.
- Already on Bosch 18V: see the 18V lasers in our laser levels guide.
Frequently Asked Questions
What is the difference between the Bosch GLL 3-80 and GCL 2-50?
The GLL 3-80 projects three 360 degree lines around the whole room. The GCL 2-50 projects cross lines plus two plumb points for transferring marks from floor to ceiling. The GLL 3-80 has a longer range, while the GCL 2-50 has a much longer battery life and is lighter.
Does the Bosch GLL 3-80 have plumb points?
No. It projects three 360 degree lines. Where the two vertical lines cross on the ceiling and floor you get a reference point, but Bosch does not list dedicated plumb points as it does on the GCL 2-50.
How accurate are the GLL 3-80 and GCL 2-50?
Bosch lists both at ±0.3 mm per metre, with a self-levelling range of ±4 degrees.
Can I use either laser outdoors?
Red lasers are hard to see in bright light. Both work with Bosch’s LR 6 and LR 7 receivers, which extend the range to 120 m for the GLL 3-80 and 50 m for the GCL 2-50.
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