TM5-6675-326-14
12-4.2.9 Optical Tree Measurer
a. Measure tree diameter.
( 1 ) S t a n d a t p r e m e a s u r e d d i s t a n c e a w a y f r o m t r e e . T he
distance must be 4 meters, 6 meters, or even number of
meters up to 20 meters.
( 2 ) P r e s s r e l e a s e b u t t o n t o a l i n e s c a l e i n t r e e m e a s u r er
w i t h t r e e t r u n k s o t h a t o n e s i d e o f t r e e i s i n l i ne
with edge of one band shown in scale .
Release button
to freeze scale movement and take readings.
NOTE
Each band is equal to 1 relascope unit (RU).
The RU is 2% of premeasured distance
from tree.
Example:
If observation is made from 18
meters and tree is 7.4 RU’s; 2% of 18 m = 36 cm.
7.4 RU’s = 36 cm x 7.4 = 266 cm diameter
of tree (approximate diameter)
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