Key Points from This Article
- All recommended automatic levels have been chosen based on years of real site experience and reliability.
- Topcon AT-B4A and Leica NA720/NA724 are proven workhorses—robust, accurate, and suitable for almost any general construction task.
- Leica NA532 is a newer model that maintains Leica’s high standards for build quality and accuracy.
- Leica NA320/NA324 are excellent value options for small builds, self-builders, and anyone who wants reliable results on a budget.
- Avoid unknown or ultra-cheap brands—they rarely stand up to daily use or keep their calibration.
- Build quality, calibration stability, and ease of use matter more than extra features or brand hype.
- Only models recommended here have proven suitable for general construction work.
- A well-maintained, quality level can last for many years—it’s a wise long-term investment.
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If you’re in the market for an automatic (dumpy) level, it’s easy to get lost in technical jargon, endless model numbers, and bold marketing claims. Having worked with nearly every major level on the UK market over the past two decades—including multiple generations of Topcon and Leica instruments—I know what lasts, what lets you down, and which features actually matter on site. While I can’t tell you exactly what to buy for your own needs, or supply every level to everyone, I can help you avoid buying the wrong automatic level. If it’s not recommended here, then in my experience, it’s not suitable as a general construction automatic level.
In this article, I’ll share my honest buying advice and highlight the models I recommend most, so you can invest in the right level for your needs without wasting money or time. Whether you’re a site engineer, a self-builder, or a contractor setting up foundations, drainage, or landscaping, the automatic levels I cover here are tools I’ve personally relied on (and sometimes abused!) through years of real site work.
Overview: What to Look For in an Automatic Level
Before diving into individual models, here’s what matters most when choosing an automatic level:
- Accuracy and reliability (can it hold its calibration after a few knocks?)
- Build quality (weatherproofing, solid feel, robust compensator)
- Ease of use (simple setup, clear optics, sensible controls)
- Service and spares availability
- Value for money (sometimes a slightly higher spend saves a lot long-term)
You’ll find more detailed buying tips here:
My Top Recommendations (with Real-World Insights)
Topcon AT-B4A
- Why I recommend it: The Topcon AT-B series has been a staple on UK construction sites for years, and the AT-B4A is arguably the sweet spot of performance, durability, and price. I’ve personally owned an AT-B3 since 2011, and it’s still going strong—proof that a good quality, well-looked-after level will last for years. I’ve used various AT-B models over multiple revisions and have always found them easy to set up, resistant to everyday knocks, and impressively stable in rough conditions.
- Key features:
- Magnification: 24x
- Short focus distance (just 0.2m from the end of the telescope)
- Weather and dust resistant
- Full review: The Topcon AT-B3A Auto Level
- Buy the Topcon AT-B4A from Lichfield Survey Supplies
- Check the price of the Topcon AT-B4A on Amazon.com
Leica NA720 / NA724
- Why I recommend it: Leica’s NA700 series is built for the realities of busy construction sites—mud, water, and tough handling are no problem. The NA720 (20x) and NA724 (24x) both offer outstanding reliability and excellent optics. I remember the NA720 was one of the very first automatic levels I used back in the early 2000s, and it made a big impression on me for its durability and ease of use. These are levels I’ve seen survive years of everyday site use, and I’ve regularly checked and calibrated them for clients who demand long-term performance.
- Key features:
- Swiss optics for bright, clear readings
- IP57 water and dust protection
- Exceptionally stable compensator
- Full review: Leica NA320 Automatic Dumpy Level Review
- Check the price of the Leica NA720 on Amazon.co.uk
- Check the price of the Leica NA720 on Amazon.com
Leica NA532
- Why I recommend it: The NA532 is a newer model from Leica. While I have not personally used this particular instrument, I trust Leica to produce quality levels based on my extensive experience with their other models. The NA532 maintains Leica’s reputation for rugged construction and reliable performance, making it a strong choice for those who want professional quality at a competitive price.
- Key features:
- 32x magnification
- Fast, accurate compensator
- Clear, easy-to-read optics
- Check the price of the Leica NA532 on Amazon.co.uk
- Check the price of the Leica NA532 on Amazon.com
Leica NA320 / NA324
- Why I recommend it: The NA320 and NA324 are ideal for small builds, self-build projects, and landscaping work where you still want professional reliability without breaking the bank. They are robust, easy to use, and provide consistent results you can trust on site. For anyone starting out or needing a solid level for occasional use, these models offer great value for money.
- Key features:
- 20x (NA320) or 24x (NA324) magnification
- Smooth operation and reliable readings
- Full review (NA320): Leica NA320 Automatic Dumpy Level Review
- Check the price of the Leica NA320 on Amazon.co.uk
- Check the price of the Leica NA320 on Amazon.com
Quick Comparison Table
| Model | Magnification | Key Features | My Notes |
| Topcon AT-B4A | 24x | Rugged, precise, easy-focus | Site staple, my favourite as I have owned an AT-B3 for years. |
| Leica NA720 / 724 | 20x / 24x | Tough, waterproof, Swiss optics | Super reliable, one of the first I ever used on site. |
| Leica NA532 | 32x | Affordable, clear optics | Leica on a budget, latest model. |
| Leica NA320 / NA324 | 20x / 24x | Entry-level Leica quality | Great for self-build and small building sites. |
Buyer’s Advice & Real-World Tips
- Don’t buy cheap unknown brands—they rarely hold calibration and often cost more in downtime.
- Pay attention to warranty and aftersales support.
- If you work in wet or muddy conditions, pay extra for dust and water protection.
- I always recommend buying from a reputable supplier with calibration and servicing options.
Related:
Summary: My Personal Experience
Having used these levels—and their predecessors—across countless projects, I can say with confidence that each of these models stands up to real site abuse and delivers consistent, accurate results. If you want to invest once and avoid headaches, pick one of the above and look after it. It’s a tool you’ll rely on for years.