Leica DISTOLeica DISTOTMTM D8 D8

Solutions for Forestry and AgricultureSolutions for Forestry and Agriculture

2

1x

0.000m

Perfect Features for Outdoor ApplicationsDigital Pointfinder & Colour Display

The 2.4” Vibrant Color Display with 4x zoom makes finding and aiming targets much easier and causes less strain to the eyes when using an optical viewfinder or trying to find or aim the laser dot at the target.

2x

0.000m

4x

0.000m

Black and white mode can also e set for enhanced contrast, ideal in where the target and background is of the same colour.

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Perfect Features for Outdoor ApplicationsLong Range, Timer, Tripod Mode

The Long Range Mode (LR Mode) allows for distances to be measured reliably even in natural lighting conditions

Given the right conditions, the effective range of 200m is achievable requiring a measuring time of 7 seconds and a target plate.

Thus it is recommended to mount the unit on a tripod as the units come with a brass female thread. The tripod changes the measuring reference to the tripod thread.

Timer function help minimise movement of the unit when the ON/Off button is pressed.

By holding down the On/Off button to activate the continuous mode will increase the chances of getting a reading but will require a longer time.

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Leica DISTO™ D5Technical Specifications

Range: 0.05 – 200m Typ. accuracy ± 1.0 mm Smallest unit displayed 0.0000 m Digital pointfinder (4x zoom) 2,4” vibrant colour display with 320 x 240 resolution Inclination sensor ± 45° @ 0.3° accuracy Long Range (LR) Mode Flip-out end piece with automatic detection Tripod thread (metal) Functions:

Area Volume Trapezium Stake-out Timer

Pythagoras Triangle & Polygon Area Memory

Indirect Horizontal Distance

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Improvements over Leica DISTO™ D5

360o Tilt Sensor

Bluetooth Connectivity and Navigation Keys

0.1o Accuracy to housing

Advanced Indirect Measurement Technology

Real-time Vertical Tracking Capability

Horizontal Profiling Capability

Leica DISTOTM D5

Leica Leica DISTODISTOTMTM

D8D8

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Applications in Measuring Tree Heights

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Tree Height Measurement Remote Elevation Function (D8 model only)

Take the reference measurement reading at the base of the tree.

Real time height is automatically tracked as you move the digital pointer up.

2nd measurement point does not need a stationary, nor reflective surface so the movement of the canopy will not pose a problem

Benefits

• 1 man operation

• Minimum equipment needed

• Measurement from a distance

• Several trees can be measured from 1 location

• Reliable tree heights results in better allocation of safety area to cut down trees

Reference Measurement

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Tree Height MeasurementIndirect Vetical Measurement (D5 & D8 modes )

It is common when the base of the tree is hidden from view.

By using the Indirect Horizontal to take 2 measurements, press and hold the function key, the calculated vertical data will be displayed.

Adding both calculated vertical measurements, the tree height can be derived.

Tree height = A + B

Calculated Vertical A

Calculated Vertical B

Note: the reliability of the calculated height depends on the elevation changes of the ground

Measurement 1

Measurement 2

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Monitoring Tree Growth

Remote Elevation Function (D8 model only)

The canopy & trunk heights can be determined by 1 reference point

Starting at the base of the tree, move the Digital Pointfinder to the top of the trunk and note the Trunk Height.

Move the Digital Pointfinder to the top of the tree to determine the Tree Height.

Canopy Height = Tree Height – Trunk Height

Benefits

• Reliable data

• No need for climbing equipments

Reference Measurement

First point

Second Point

Trunk Height

Tree Height

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Tree Height MeasurementMeasurement of Tilted Trees

Double Tilt Measurement (D8 model only)

Where the tree is located on a higher ground and the base is not visible

Take the first measurement at the foot of the elevated ground and the second at the top of the tree

Press and hold the function key to display calculated X & Y data.

The measured tree height is calculated on the assumption that the 1st measurement point is on the same elevation as the second

Benefits

• Some locations are impossible to access

• Safety and no need for climbing equipment

X

Y

X

Y

Note: the reliability of the calculated height depends on the elevation changes of the ground

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Tree Height Measurement (Tilted Trees)Indirect Measurement

Double Tilt Measurement (D8 model only)

Take the base and top measurements and the calculated tree height will automatically displayed.

Press and hold the function key, the angle of the tree’s tilt will also be displayed.

Benefits

• Quick and simple solution to a tree’s true height

X

Y

Calculated Tree Height

X

Y

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Applications in Plot Verification, Sampling

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Tree / Vegetation DensityArea Calculation

Triangle Function (D5 & D8 models )

Triangulate a few small plots and measure the 3 sides of the triangle to determine the area.

Count the number of trees to derive the density

The average would constitute the density

Benefits

• Near impossible to plot a square or rectangle without help of instruments

• so the triangle provides the most reliable source of area calculation

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Plot VerificationArea Calculation

Triangle Function (D5 & D8 models )

In situations where a plot of forest needs to be verified against master blueprints, aerial photographs may be a costly solution

But in a small plot a cost effective solution would be to use the triangle function

By using the addition function with the triangle angle function, the area of any plot shape can be systematically calculated

Benefits

• Near impossible to plot a square or rectangle without help of instruments

• so the triangle provides the most reliable source of area calculation

1

2

3

4

5

6

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Applications in Monitoring Slopes, Erosion

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Double Tilt Measurement ( D8 model only )

In areas of potential erosion or landslides, monitoring the movement of the ground is conducted on a periodical basis

The calculated data provides the user with a 3 dimensional data base to which to better monitor the rate of erosion or movement:

- Diagonal Distance between posts (Z)

- Slope angle ()

- Horizontal Spacing (X)

- Vertical Spacing (Y)

Monitoring Soil MovementsIndirect Measurement

X

Y

X

Y

Z

The use of Bluetooth, the measured data can be wireless transmitted onto an Excel file to eliminate data entry errors

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Monitoring Soil MovementsChanges in Height between Points

Horizontal Profiling ( D8 model only )

In monitoring erosion, several posts/markers would be set in the area.

Using the Horizontal Profiling Function, the height difference between each marker and the first is recorded periodically

H

The use of Bluetooth, the measured data can be wireless transmitted onto an Excel file to eliminate data entry errors

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Applications in Reforestation

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Stakeout Function (D5 & D8 models )

In Reforestation there is a need to ensure every seedling/tree will have sufficient space to grow.

In the case of Agriculture; the importance of optimal use of the land.

The stakeout function ensures that equal space between the plants / crops.

Planting / Seeding

AAA

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Land Preparation for Agriculture

Horizontal Profiling ( D8 model only )

Studies have shown that a level ground would require less water and minimise weed growth.

Before land leveling can begin, a simple survey of the land helps determine the average height to set for the leveling.

With several markers on the field, the user can quickly determine the elevation profile of the plot without the need for a staff

Benefits

• Easy compared to conventional an optical level and staff

• No eye strain from using optical level

• 1 person operation

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Grain StorageVerifying Storage Levels

Indirect Vetical Measurement (D8 modes )

In developed countries where grain/wheat is stored in silos, a measure stick is sometimes used. This poses a problem when the grain level is low and the silo very tall.

In large silos, grain level markers are sometimes used and the farmer merely has to peer inside with a torch, giving rise to the risk of a fall into the silo.

Using the indirect measurement with the tilt sensor, the vertical height B can be measured and the gain level be quickly calculated.

Grain Level = Total Silo Height – Indirect Vertical

Total Silo Height

Indirect Vertical

Benefits

• Safety

• no need for different measure stick for dfferent silos

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Summary of ApplicationsUsers (Models Used)

• Monitor tree growth rate, maturity and development.

Users : Agriculture and Parks Offices in USA, Europe, Asia (A8, D8)

• Ensure trees along runway do not exceed height limit

User: Civil Aviation Authority of Singapore (A8 & D8)

• Plan for safety zone when chopping down a tree

User: Agriculture Office, Baden Wuttemberg, Germany (D8)

• Check for Tree / Shrub density (number / 50m2)

Users : Forestry depts.

• Checking Slopes and Landslide Prevention

Users : Land Authority / Forestry depts

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Leica DISTOTM Distance Meter Compared to current methods

• One Person Operation / Measurements

• Indirect Measurements Now Possible from a Distance

• No need for Climbing Equipments

• Multi-Functional Device – heights, lengths, areas, angles

• Wireless Data Transfer to Tablet PC, Laptop for data recording and collation

Disclaimer:

The applications shown are examples and suggestions for possible solutions.

The reliability, accuracy and ability to use such applications depend on the proper setup, positioning, skill ad ability of the operator and the conditions of the site.