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automatic level
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1.endless horizontal drive for left and right handed users 2.coarse and fine focusing knob 3.play-free footscrews 4.optional

Technical Data

NA2 / NAK2


0.7 mm (dependent on staff, technique)0.3 mm (with parallel-plate micrometer)


standard: 32xFOK73 eyepiece (optional): 40x

Shortest focusing distance

1.6 m

Compensator setting accuracy


The NA2 universal automatic  level meets all requirements regarding precision, convenience and reliability.

It was designed by survey orsand 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


• Tacheometric levelling

with the K-version on flat

terrain by combining

stadia and angular measurements

with height


• Deformation measurement

and monitoring of


Quickly set up, simple to use

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 levelling 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


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 footscrews

The pitch of the smoothrunning

and backlash-free

footscrews is such that

the bubble can be centred

in a very short time.

Independent of


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.

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


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.

NA2/NAK2 compensator

1 Suspension tapes

2 Prism (fixed)

3 Compensator body

4 Pendulum with prism

5 Line of sight

6 Push-button

7 Spring which taps pendulum

8 Pneumatic damping mechanism

Push-button control –

added security

With most automatics one

taps the tripod or instrument

to check if the compensator

is functioning.

Leica Geosystems offers a

far more sophisticated


Pressing the button under

the NA2 eyepiece gives the

compensator a gentle tap,

so that you see the staff

image swing smoothly

away and then float gently

back to give the horizontal

line of sight. This check,

which takes less than

a second, is technically

perfect, as the pendulum

itself is activated and

swings through its full

range. It is also immediately

apparent if the bubble

is not centred.

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.

automatic level

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