Bosch Professional Laser Measure GLM 50-27 C Review: Best Tool?
We recently put the Bosch GLM 50-27 C laser measure through its paces on a few home projects to see how it actually holds up. Right out of the box, it feels solid—definitely not flimsy—and it brushed off a couple accidental drops like nothing happened. The screen’s crisp, and the vibration feedback is a nice touch. You don’t have to keep squinting at the numbers to make sure you got a reading.

Connecting it to the app was surprisingly quick, and saving measurements or jotting down notes was straightforward. The help animations actually came in handy when we switched modes. It’s not flawless—the buttons could be snappier—but honestly, it nails the basics for both DIY folks and pros.
Bottom Line
The Bosch GLM 50-27 C is a tough, no-nonsense laser measure that makes life easier if you measure a lot. Accurate, easy to use, and feels like it’ll last.
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Overview of the Bosch Professional Laser Measure GLM 50-27 C
This laser measure feels sturdy and reliable for everyday site use. With its tough build and IP65 protection, it handled dust and light rain without batting an eye, and even survived a short tumble onto concrete. The color screen makes readings easy to see, and the vibration feedback is honestly more helpful than you’d expect.
Getting it set up with the MeasureOn app was smooth, too. Once you get the hang of it, recording and organizing measurements on your phone is a breeze.
Pros:
- Durable, well-built feel
- Consistent, accurate readings
- Handy Bluetooth for saving data
Cons:
- Costs more than the basic models
- App can be a little confusing at first
Key Features
Robust IP65 Construction
We put the GLM 50-27 C through its paces on some dusty and damp worksites, and it didn’t flinch. That IP65 rating means it shrugs off water and fine debris, which is a relief if you’re working outside or in messy renovation zones. The casing’s tough and took a couple of knocks without any damage.
Pros:
- Handles rough treatment without fuss
- Works well in light rain or dust
Cons:
- Bit bulkier than some featherweight laser measures

Bluetooth Connectivity and MeasureOn App
Getting it paired with the MeasureOn app was painless. We used it to log room dimensions and attach notes to photos, which honestly saved a lot of scribbling. The Bluetooth connection held steady, though moving a big batch of data was a touch slow.
What worked well:
- Easy pairing with your phone
- Cloud access for quick sharing with the crew
What could improve:
- The app’s layout isn’t super intuitive right away
Smart User Interface with Colour Display
The color display is bright and readable, even outdoors. The vibration feedback is subtle but really handy—you know you got the measurement, even if you’re not looking at the screen. The Help Function shows quick animations that explain each mode, which is pretty helpful when you’re poking around new features.
Highlights:
- Easy-to-read color screen
- On-screen tips for different measuring jobs
The screen can get a little reflective in direct sunlight—just tilt it a bit to cut the glare.
Comprehensive Measurement Functions
We used it for lengths, areas, and volumes—plus indirect measurements when we couldn’t get a straight shot. The memory stores up to 30 recent readings, which is handy for double-checking numbers later.
Function | Use Case | Our Impression |
---|---|---|
Length & Area | Room sizing and wall layout | Accurate and consistent |
Volume | Calculating material needs | Quick and reliable |
Indirect Measurement | Height or distance with obstacles | Works well with steady aim |
Memory Recall | Keeps previous data | Saves time revisiting measurements |
We found the accuracy to be spot on within its stated range, and it’s quick to respond. It’s not a full-on survey tool, but for building and renovation, it’s more than good enough.

Pros and Cons
After a few days using this laser measure on site, a few things really stood out—both good and not-so-good.
Pros
- Accurate and Reliable: Readings were spot on, even at longer distances. We pretty much stopped double-checking with a tape measure.
- Durable Build: The rugged design and IP65 rating shrugged off dust and drops. It feels jobsite-ready.
- Easy to Use: The color screen and vibration feedback make it simple to confirm measurements. The help animations don’t hurt, either.
- Bluetooth Connectivity: Syncing with the MeasureOn app made it easy to keep track of measurements and floor plans.
- Practical Accessories: The pouch and hand strap are actually useful—not just throw-ins.
Strength | Why It Matters |
---|---|
Accuracy | Less time spent rechecking |
Durability | Handles rough work environments |
Connectivity | Keeps digital records simple |
Usability | Clear display and helpful feedback |
Cons
- Price: It’s pricier than basic models, so not ideal if you just want something cheap and simple.
- App Learning Curve: The app works well once you get it, but drawing projects in it takes a little getting used to.
- Extra Features Not for Everyone: Some of the advanced stuff might be overkill if you just want to measure a wall or two.
Customer Reviews
Most users seem to trust the GLM 50-27 C for accuracy. A lot of folks say it measures confidently even in bright light, and the Bluetooth app makes saving results way easier.
Plenty of reviewers mention they don’t feel the need to double-check with a tape. The solid build and little touches—like the built-in spirit level—get a lot of love, too.
That said, some people think the price is a bit steep for their needs, and a handful found the app setup a bit fiddly.

Overall sentiment:
Aspect | Feedback Summary |
---|---|
Accuracy | Very positive |
Ease of use | Mostly positive |
Value for money | Mixed |
App performance | Needs improvement |
Included Accessories
The included accessories are actually useful. The soft pouch keeps the laser measure safe in your toolbox or bag—nothing fancy, but it does the job.
The hand strap feels secure and helps avoid drops, especially if you’re up a ladder or working in a tight spot. The two AA batteries come pre-installed, so you’re ready to go right away.
If we’re nitpicking, the pouch’s belt loop could be tougher—it’s fine for light use but might wear out if you’re rough on gear. Still, the whole setup makes getting started quick and hassle-free.
Conclusion
After using it on a handful of home and job site projects, we’re convinced: the GLM 50-27 C is accurate and reliable. It handled measuring tasks without fuss and feels tough enough for real-world conditions.
It locks onto targets fast, and the Bluetooth makes saving measurements a breeze. The display stays readable, even outside in bright light.
On the flip side, the price is a bit much if you just need something for the odd job, and the app can take a little patience to figure out.
Pros:
- Consistent, accurate readings
- Rugged, weather-resistant build
- Easy data transfer
Cons:
- Costs more than basic models
- App interface could be simpler
If you care about accuracy and durability, this Bosch laser measure is a solid pick—even if it’s not the cheapest option out there.
Frequently Asked Questions
How does the accuracy of the Bosch GLM 50-27 C compare with other models?
We found the GLM 50-27 C to be very consistent. It’s on par with other high-end Bosch models, and honestly, a bit better than some mid-range ones. Even at longer distances indoors, it didn’t let us down.
Model | Typical Accuracy | Our Impression |
---|---|---|
GLM 50-27 C | ±1.5 mm | Consistent and dependable |
GLM 50-23 | ±1.5 mm | Similar precision, but slower readings |
Older Bosch models | ±2 mm or more | Less stable in bright light |
What are the main differences between the GLM 50-27 C and the GLM 50-23?
The biggest difference is build quality and connectivity. The 50-27 C feels tougher, and the Bluetooth for the MeasureOn app is a real bonus for saving and sharing measurements. The 50-23 doesn’t have Bluetooth and feels a bit more basic.
Key distinctions:
- Durability: The 50-27 C has an IP65 rating—better for rough work.
- Interface: The color screen and vibration feedback make the 50-27 C easier to use.
- Data transfer: Only the 50-27 C has Bluetooth.
Can the Bosch GLM 50-27 C be used for outdoor measurements effectively?
We tried it outside and, honestly, it does the job in the shade or when it’s cloudy. Direct sunlight? That’s trickier—the red laser’s tough to spot, but that’s pretty standard for these devices. A target plate or just waiting for the sun to dip a bit makes a big difference.
Tip: Hooking it up to the app is handy for grabbing outdoor readings fast, especially if you’d rather not scribble stuff down.
What improvements have been made in the Bosch GLM 50-27 C over previous models?
Bosch really beefed up the durability this time. The rubberized shell and drop resistance give it a sturdier feel compared to older models. That color screen? Much sharper. And the animated Help Function actually makes setup less annoying, especially if you’re new to these.
Mode switching, like going from area to volume, is snappier now. Plus, the Bluetooth connection to the MeasureOn app feels more solid than what we’ve seen before.
How user-friendly is the interface of the Bosch GLM 50-27 C for new users?
The interface? Pretty simple after a bit of poking around. The color display and those little vibration buzzes help confirm you’ve got a measurement, so you’re less likely to mess up. The built-in Help Function does a decent job explaining features, which is nice if you’re still figuring things out.
Menus might seem a little busy at first, but give it a few minutes and it starts to click.
Are there any common issues or drawbacks reported by users of the Bosch GLM 50-27 C?
Most folks seem pretty happy with it, especially when it comes to accuracy and how solid it feels in your hand. That said, some people find the app a bit tricky to figure out at first, and a few wonder if all the extra features are worth the price if you’re just after simple measurements.
Common notes from users:
- Pros: Accurate, tough build, easy-to-read screen.
- Cons: On the pricey side, laser can be hard to see outdoors, takes a little time to get used to the app.