Spiegel Relaskop（TM）

by Dr. Walter Bitterlich, Austria
manufactured by Relaskop Technik
V.MBH Salzburg Austria.　







Spiegel Relaskop with GITZO Tripod
World Standard versatile analog forest
mensuration tool for more half century.



This instrument reminds me of the day I visited
Dr. W. Bitterlich in his Salzburg home
on 28 Sept.2002（he was 94 years old ）

He passed away on 2008/02/09 (10 days before
his 100th birthday, 99 years old)






The relaskops are principally known in connection with

angle-count sampling(ACS), a method which determines

basal area density in forests by a simple counting method.

The relaskop automatically connects any inclination

in the line of sight, making it possible to easily find

stand basal area in square meters per hectar either

at breast height ( 1.3 m above the ground9 or

any other height.



The relaskop offer quite a few other measurement

applications in practical and scientific forestry.



* Determining horizontal distance with automatic correction

for the angle of inclination.

*Measurement of Total tree height, or heights to particular

upper stem diameter.

* Measurement of upper stem diameters at particular heights.

* Quick determination of "slenderness"

(height /diameter ratio) of standing tree.

*Determination of from heights.,and the volumes of standing

trees by Presler’s formula.

*Relaskops are the principle instrument of " variable plot

sampling " which has a special advantage.






Japanese >> > > >

Read more＞＞