Suunto PM5 Manuel d'utilisateur télécharger pdf (Page 5)

PM-5/1520

OPTICAL HEIGHT METER

Suunto Height Meter PM-5/1520 is an instrument for measuring heights, especially

heights of trees, with great accuracy and speed. The body of the instrument is

corrosion-resistant anodized aluminium-alloy. The scale card runs on a special

bearing in a hermetically sealed plastic container filled with a liquid which guarantees

that it runs freely and stops quickly. The liquid will not freeze, retains full damping

properties in working conditions and eliminates irritating scale vibrations.

INSTRUCTIONS FOR USE

When measured from distances of 15 m and 20 m, tree heights can be read straight

off the instrument’s scales. The readings should be doubled when measuring from

distances of 30 m and 40 m. The Suunto Height Meter can also be used to determine

the angle of a gradient. This is done by taking a sighting along the line of a gradient

using the 20 m scale on the left of the instrument. The reading obtained can be

checked in the conversion table on the back of the instrument to obtain the angle.

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Suunto PM5 Manuel d'utilisateur Page 5