Building & Construction Levels

For over twenty years Survey Systems has been offering the sale, hire and repair of surveying and ancillary equipment to businesses and individuals throughout the UK. Now you can experience the same service here on-line 24 hours a day, seven days a week.  Supplying products from leading manufacturers including Leica Geosystems and Pentax Surveying Division, we have an instrument for any job.

What is a Dumpy or Automatic Level?

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Builders Levels

Leica Runner Series
The Leica Runner 20 and 24 are robust, budget-priced construction levels. They are quick to set up, simple to use and accurate, with clear, bright optics for easy readings.

• Robust and accurate
• Air-damped compensator
• Water resistant (IP55)
• Double-sided endless fine drive
• Pentaprism for easy viewing of circular level
• Horizontal circle with 360° division
• Budget-priced

Pentax Profile AL-26

With high magnification, dual tangent screws and solid build for added convenience and reliability on site.

From setting up to sighting and focusing, the AL-26 is both simple to use and care for, whilst providing an accuracy of 2mm over a 1km double run. Inspected twice for accuracy before leaving the factory, the AL-26 boasts a range of features to master every leveling requirement.

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Digital / Electronic Levels

Leica Sprinter Series

Measurements have never been so easy to perform with the new LEICA SPRINTER Electronic Level. The LEICA SPRINTER allows users to perform their job quickly and efficiently.

The new LEICA SPRINTER Electronic Level offers everything that you would expect from a construction instrument:

• Simple user interface
• Built-in tilt warning system
• On-board applications
• Short measuring time
• Protection against dust/water
• Low power consumption with AA dry cells
• Internal memory (optional)
• RS232 port for easy interface (optional)

You will discover that LEICA SPRINTER sets new standards and provides a technological leading edge over and above other level products:

Increase Productivity

• Display measurements in less than 3 seconds
• Compute height difference and reduced level on-board instantaneously
• Record results on-board and can be downloaded to office computer (optional)

Minimize Human Errors                                                                                                    

• No more staff reading and transcription errors
• Tilt warning system stops measurement in out-of-level situations

Operate in Low Light Conditions

• As low as 20 Lux
• Works in dim streetlights, indoors, tunnels and even in the dark with a flashlight

Enhance User Benefits with Value-added Functions

• Continuous tracking mode
• Inverse staff measuring mode
• On-board adjustment program
• Auto-off power saving
• Reduced level input mode
• And more...

* For range up to 80m performed under normal light conditions

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Precise Levels

Precision Levels for all your stringent requirements.

Leica NA2 and Leica NAK2 are two universal automatic levels meet all the requirements of precision levelling.

Leica's top-class optical quality gives the NA2 & NAK2 a bright high contrast image.

• Push button compensator check
• Endless horizontal drive for left and right handed users
• Coarse and fine focusing knob
• Play-free footscrews
• Optional eyepieces available
• Top-class optics

* Per 1km double run

To improve accuracy a parallel plate micrometer can be fitted over the telescope objective. The parallel plate micrometer permits direct readings to 0.1mm and estimated readings to 0.01mm. This makes the NA2 and NAK2 an ideal precise level for deformation studies or industrial measuring tasks.

The NAK2 model has an internal glass circle for reading horizontal angles. Combined with the stadia calculation of distances from staff readings the NAK2 circle adds the application benefit of detail survey work.

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What is a Dumpy or Automatic Level?

A dumpy level, builder’s auto level or automatic level is an instrument used in surveying and building to transfer, measure, or set horizontal levels. It is an instrument that is set up on a tripod and, depending on the type, either roughly or accurately set to a leveled condition. One operator looks through the sight while the other holds a tape measure or graduated staff at the position to be measured. They are used to gather and/or transfer elevations (or levels) during site surveys or building construction. They generally start from a reference point known as a benchmark, this may be a value from a known survey point, or an arbitrary point used as a once off.

A dumpy level is an older style instrument that requires skilled use to set accurately.

The instrument requires to be set level in each quadrant, to ensure it is accurate through a full 360 ° traverse.

A variation on the dumpy and one that was often used by surveyors, where greater accuracy and error checking was required, is a tilting level. This instrument allows the telescope to be effectively flipped through 180 °, without rotating the head. The telescope is hinged to one side of the instruments axis, flipping it involves lifting to the other side of the central axis (thereby inverting the telescope). This action effectively cancels out any errors introduced by poor setup procedure or errors in the instruments adjustment. As an example, the identical effect can be had with a standard builders level by rotating it through 180 ° and comparing the difference between bubble positions.

An automatic level, or builders auto level, involves an internal mechanism that once set close to level, will automatically compensate for any slight, remaining variation. This cancels the need to set the instrument truly level, as with a dumpy or tilting level. They are now the preferred instrument on building sites, construction, and surveying due to their ease of use and rapid setup time.

The term dumpy level endures despite the evolution in design.

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