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==General description== | ==General description== | ||
Haga is a device to measure tree heights within distances of 15, 20, 25 and 30m to the tree by the [[trigonometric principle]].The distance to three can optically be determined. Additionally there is a scale for slope measurements in % implemented. Therefore a levelling board is available. | Haga is a device to measure tree heights within distances of 15, 20, 25 and 30m to the tree by the [[trigonometric principle]].The distance to three can optically be determined. Additionally there is a scale for slope measurements in % implemented. Therefore a levelling board is available. | ||
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| − | + | [[file: haga01_portrait.jpg|Figure 1: Haga altimeter]] | |
| − | [[file: haga01_portrait.jpg | + | [[File:using haga.jpg|Using a Haga altimeter]] |
| − | [[File:using haga.jpg | + | |
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==Handling== | ==Handling== | ||
The handling of the Haga is similar to the [[Blume Leiss]]. A button enables the actor to lock the needle where the measurement value can be read. | The handling of the Haga is similar to the [[Blume Leiss]]. A button enables the actor to lock the needle where the measurement value can be read. | ||
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| − | [[file: haga02_measurement-bottom.jpg | + | [[file: haga02_measurement-bottom.jpg|Figure 2: Live view measuring tree bottom]]. |
| − | [[file: haga03_measurement-top.jpg | + | [[file: haga03_measurement-top.jpg|Figure 3: Live view measuring tree crown]] |
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Remember the value and measure the crown. | Remember the value and measure the crown. | ||
Revision as of 16:16, 12 June 2012
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This section is still under construction! This article was last modified on 06/12/2012. If you have comments please use the Discussion page or contribute to the article! |
General description
Haga is a device to measure tree heights within distances of 15, 20, 25 and 30m to the tree by the trigonometric principle.The distance to three can optically be determined. Additionally there is a scale for slope measurements in % implemented. Therefore a levelling board is available.
Handling
The handling of the Haga is similar to the Blume Leiss. A button enables the actor to lock the needle where the measurement value can be read.
.
Remember the value and measure the crown.
The difference between the measurements will be tree height –
\[ {h_t} = {h_c} - {h_b} \].
The difference between the measurements will be tree height –
\[ {h_t} = {h_c} - {h_b} \].
[[Category:]]
