Automatic Lasers

 

Construction laser

Cross line laser

Dot laser tools

Dual grade laser

Green beam laser

Interior laser

Laser detector

Interior multiline laser

Pipe installation laser

Plumb laser

Single grade laser

 

Automatic Levels

 

Digital electronic level

Automatic dumpy level

 

Leica Disto

 

Leica disto D210

Leica disto X310

Leica disto D3aBT

Leica disto D510

Leica disto D810

Disto accessory

 

Laser Calibration 

Laser level repair

 

Cable Locators

 

Leica digicat 550i

Leica digimouse

Leica digitex

Leica digitrace

Pipe locator

Signal clamp

 

Machine Control

 

2D control system

Machine control system

Leica digging system

Universal receiver
 

Rail Alignment

RS 4000 system

 

Total Station

 

Electronic theodolite

Leica total station

Topcon theodolite 

 
 
 
 
 
 
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Universal Automatic Level Leica NAK2:

The NA2 universal automatic level meets all requirements regarding precision, convenience and reliability. It was designed by surveyors and development engineers with years of experience and who know what a field instrument

has to be able to do. The NA2 soon pays for itself, because it can be used for all types of surveying job; on building sites for routine levelling, in engineering projects, and for geodetic control at all levels of accuracy.

 

Universal application:

 

Levelling of all types and all orders of accuracy

Precise levelling and settlement determinations on buildings

Routine heighting for the construction of roads, railways, pipelines, tunnels and so forth

Setting-out work and control measurements on the construction site

Area levelling of high Accuracy

Tacheometric levelling with the K-version on flat terrain by combining stadia and angular measurements with height readings

Deformation measurement and monitoring of bridges  

 

Adjust the line of sight automatically

 

Easy to level up

The advantage of this instrument is that, as soon as the bubble is centred, the line of sight is horizontal for all pointings of the telescope. The observer is freed of the time-consuming centring procedure involved with the traditional tubular level, and can concentrate on the business of staff readings.

 

Robust and automatic

The compensator is essentially a pendulum with a prism (4). The suspension system comprises four flexed tapes (1) made of a special alloy to ensure faultless functioning even at extreme temperatures. The compensator, which is located between the focusing lens and the crosshair reticle, is pneumatically damped against mechanical vibration and is screened against magnetic fields.

 

Minimum maintenance

In the unlikely event that the compensator is damaged (and this can only happen as a result of extremely harsh treatment) it is replaced easily, being held only by three screws.

 

Top-class optics

The telescope is of excellent quality and gives a bright, high-contrast, erect image, even in poor light – an essential for accurate levelling. With the standard eyepiece the magnification is 32×, the optimum for most applications of the

instrument. Optional eyepieces are available; the 40× may be preferred for precise levelling, the 25× in hot, shimmer conditions. Eyepiece exchange takes only a second or so. The focusing knob has a coarse/fine movement:

– coarse, for rapid setting with minimum turning

– fine, for the final delicate touch to give the perfect image.

 

Fatigue-free viewing

The reticle has:

– a single horizontal hair for reading normal staffs

– a wedge-shaped hair for use with invar staffs

– stadia hairs for distance measurement and threewire levelling.

 

The general layout of the controls, the smooth friction-braked rotation of the instrument, and the endless horizontal drive with bilateral knobs, all combine to make the instrument easy to use.

 

At an advantage on unstable ground

If a tubular level is used on unstable ground it tilts out of range and has to be continuously reset. By contrast, the pendulum of the NA2 “compensates” and keeps the line of sight horizontal.

 

Angle measurement with the NAK2

Civil engineers and contractors often require a circle for angle measurement and setting-out work. Even simple detail surveys, by taking angle, distance and height, and plotting with the polar method, can be done with a level. The model NAK2 has an internal glass circle which is read via a scale microscope and which can be set to any value by turning the rim around the base of the instrument.

 

Standard deviation for 1 km double-run

levelling, depending on type of staff and on procedure

up to 0.7 mm

With parallel-plate micrometer

0.3 mm

Telescope

erect image

Standard eyepiece

32×

FOK73 eyepiece (optional)

40×

FOK117 (optional)

25×

Clear objective aperture

45 mm

Field of view at 100 m

2.2 m

Shortest focusing distance

1.6 m

Multiplication factor

100

Additive constant

0

Working range of compensator

~30’

Setting accuracy of compensator (stand. dev.)

0.3“

Sensitivity of circular level

8’/2 mm

Glass circle (K version)

400 gon (360°)

Graduation diameter

70 mm

Graduation interval

1 gon (1°)

Reading by estimation to

10 mgon (1’)

Water- and dust resistance

IP53

Temperature range:

 

Operation

–20°C to +50°C (– 4°F to 122°F)

Storage

–40°C to +70°C (–40°F to 158°F)

Parallel-plate micrometer (optional )

GPM3, with glass scale

GPM6, with metal drum

 

Range

10 mm

10 mm

Interval

0.1 mm

0.2 mm

Estimation

0.01 mm

0.05 mm

  
 

Strong tripods

 

In principle, the NA2 can be set up on any Leica Geosystems tripod. In practice, for all-round purposes, we recommend the heavy-duty GST20 telescopic-leg tripod. For precise level ling the GST40 fixed-leg tripod is suitable because of its extreme rigidity. The modular relationship between instrument and tripod is an advantage when transport space is

limited.

 

Centring is easy

 

The circular level only needs to be centred approximately to bring the compensator well into its working range of ~30', and so setting-up goes quicker. The bubble is viewed positively via a pentaprism and is monitored down the eyepiece.

 

Play-free foot screws

 

The pitch of the smooth running and backlash-free foot screws is such that the bubble can be centred in a very short time. Independent of temperature Unlike the tubular level of a traditional instrument, the NA2 universal automatic

level is relatively insensitive to direct solar radiation and an umbrella need only be considered for the most precise levelling.

 

Independent of temperature

 

Unlike the tubular level of a traditional instrument, the NA2 universal automatic level is relatively insensitive to direct solar radiation and an umbrella need only be considered for the most precise levelling.