Leica DISTO A2 User Manual

Leica DISTO™ A2

The original laser distance meter

User Manual

English

Congratulations on your purchase of a Leica DISTO™.

The safety instructions can be
found in a separate booklet, which
accompanies this user manual.

The safety instructions along with
the us er manual shou ld be read caref ul ly before in it ial
operation.

Overview

Keyboard

See drawing{A}:
1 ON/DIST (ON/MEASUREMENT) -key
2 PLUS [+] -key
3 AREA/VOLUME -key
4 REFERENCE -key
5 CLEAR/OFF-key
6 UNITS/ (UNITS/ILLUMINATION) -key
7 MINUS [-] -key

Display

See drawing {B}
1Laser "ON"
2 Reference (front/rear)
3Area/volume
4Battery symbol

5Main targets
6 Units with exponents (
7 Second row (e.g. intermediate values)

2/3

)

Start up

Inserting / Replacing Batteries

Remove the battery cover, insert the battery
correctly. Close the battery compartment. Replace
the battery when this symbol constantly blinks
in the display.

• Only use alkaline batteries.

• Batteries should be removed due to danger of
co rro sion, if t he devi ce w ill not be u sed for a long
time.

Selecting Units

Press this key until the desired unit is
displayed.

Possible units:

Distance Area Volume

0.000 m 0.000 m² 0.000 m³

0.00 ft 0.00 ft² 0.00 ft³

1

/

0' 0''

16

0.0 in 0.00 ft² 0.00 ft³

0.00 ft² 0.00 ft³

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Leica DISTO™ A2 1.1.0 gb

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Overview

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Operation

Switching on/off

Device and laser are switched on.

The battery symbol is displayed until a key is pressed.

Holding down this key switches the device off.

The device also switches off automatically after three
mintutes of inactivity i.e. no key is pressed within
that interval.

CLEAR-Key

The last action is cancelled

Within a function (area, volume, etc.) single measure­ments can be deleted step by step and re-measured.

Illumination

Switches the illumination on or off.

Reference Setting

Default reference setting is from the rear of the
instrument.

The next measurement references the front of

the instrument.
After one measurement, the reference returns auto­matically to the default setting (rear reference). See
drawing {C}.

Measuring

Single Distance Measurement

Press to activate the laser. Press again to
trigger the distance measurement.

The result is displayed immediately.

Continuous Measurement

This functions enables distances to be staked out.
See drawing {D}.

Press and hold key down until a "beep" sound
is.heard.
Press key again briefly: continuous measure-

ment is stopped.
The last measured value is displayed in the summary
row.

Functions

Addition / Subtraction

Distance Measurement.

The next measurement is added to the

previous one.

The next measurement is subtracted from the

previous one.
Repeat this procedure for as many times as required.
The result is always displayed in the summary row,
the previous value is displayed in the second row.

The last operation is cancelled.

Operation

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Leica DISTO™ A2 1.1.0 gb

Area

Press this key once. This symbol is
displayed.
Press key and take the first measurement (e.g.

length)
Press key again and take the second measure­ment (e.g. width)

The result is displayed in the main line.

Volume

Press this key twice.This symbol is
displayed.
Press key and take the first measurement (e.g.

length)
Press key again and take the second measure-

ment (e.g. width)

The area of the two values measured is displayed in
the main line.

Press the key to take the third measurement
(e.g. height). The value is displayed in the
second line.

The resulting volume is displayed in the main line.

Staking out of constant distances

Constant distances can be entered for staking out
purposes. The DISTO's display shows the to be staked
out distance as well as multiples of the distance. As
soon as the defined stake out distance is reached the
DISTO beeps.
Inputting a stake out distance: Press and hold the

, key, the auxiliary line will blink with crosslines.
Change the value in the main line with and
keys until the desired staking out distance is
displayed. Holding the and down will speed
up the adjustment.

By pressing the key the staking out distance or
multiples of it are displayed in the auxiliary line; the
laser measuring starts. In the main line the distance
between the staking out point (in the auxiliary line)
and the DISTO (rear measuring reference) is
displayed.

If the DISTO is moved along the staking out line, the
displayed distance is reduced. At a distance of 0.1 m
to the next staking out point the DISTO starts to
beep. As soon as the staking out point is reached, the
beep changes and the auxiliary line starts to blink.
Repeat this procedure as often as needed.

The function is stopped by pushing the key.

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Functions

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Appendix

Display Notices

All display notices are indicated by "InFo" or "Error".
The following errors can be corrected.

InFo Cause Correction

252 Temperature too

253 Temperature too low Warm device up
255 Received signal too

256 Received signal too

257 Faulty measurement,

high

weak, time for a
measurement too
long.

strong

too much back­ground light

Error Cause Correction

Hardware error If this message

Let device cool down.

Use a target plate

Use a target plate
(gray side)

Use a target plate
(brown side)

remains displayed
after switching the
device off and on
several times, please
contact our dealer­ship.

Technical Specifications

Range (for extended
distances, use a target
plate)

Measuring accuracy (2 σ)

Smallest unit displayed
Laser class
Laser type
Automatic

power off
Display illumination
Continuous measure-

ment
Addition / subtraction
Battery life,

9 V compound battery
Dimensions and weight
Temperature range:

Storage

Operation

* in favourable conditions (optimal target surface, room
temperature) up to 12 m. In unfavourable conditions, such as
intensive sunshine, very weakly reflecting target surface or
large temperature fluctuations, measuring accuracy may
deteriorate to approx. ± 0.25 mm/m for distances above
12 m.

0,05 m to 60 m

(0.2 ft to 197 ft)

typically: ± 1.5 mm

(0.06 inch)*

1 mm

II

635 nm, < 1 mW

after 180 s

9
9

9

up to 5000 measurements

124x54x35 mm, 155 g

-25°C to +70°C

(-13°F to +158°F)

-0°C to+40°C

(+32°F to + 104°F)

Appendix

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Leica DISTO™ A2 1.1.0 gb

Measuring Conditions

Range

Range is limited to 60 m.
At night, at dusk or if the targets are shaded, the
range increases without using a target plate. When
ambient light is intense and the targets have poor
reflecting properties, use a target plate!

Target Surfaces

Measuring errors can occur when measurements are
made targetting colourless liquids (e.g. water), clear
glass, polystyrene or similar semi-translucent
surfaces, as well as from highly reflecting targets that
deflect the laser.

Care

Clean with a soft, damp cloth. Never immerse the unit
in water. Never use aggressive cleaning agents or
solvents.

Warranty

The Leica DISTO™ A2 comes with a three* year
warranty from Leica Geosystems AG.
More detailed information can be found at:

www.disto.com

All right reserved for changes (drawings, descriptions
and technical specifications).

* To receive the three year warranty, the product must be regis­tered on our website www.disto.com within eight weeks of the
purchase date. If the product is not registered, a two year
warranty applies.

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Appendix

Leica Geosystems AG, Heerbrugg, Switzerland has been certified as being equipped
with a quality system which meets the International Standards of Quality
Management and Quality Systems (ISO standard 9001) and Environmental
Management Systems (ISO standard 14001).

Total Quality Management - Our commitment to total customer satisfaction. Ask your
local Leica Geosystems agent for more information about our TQM program.

Printed in Switzerland - Copyright Leica Geosystems AG, Heerbrugg,
Switzerland 2007
Translation of original text (752828b)

Leica Geosystems AG
CH-9435 Heerbrugg
(Switzerland)
www.disto.com

Pat. No.: WO 9427164, WO 9818019, WO 0244754, WO 0216964,

US 5949531, EP 1195617