Portable orienteering compass

A directional arrow (6,6a,6b) is marked on the baseplate (1) which has a cut-out area (8) to accommodate the thumb of a user. This area (8) is broken by the directional arrow in such a way that when the user with the hand holds the compass pressed against a chart, the latter is located beneath the b...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KARI SALLINEN, HEIKKI MASALIN
Format:	Patent
Sprache:	eng ; swe
Schlagworte:	GYROSCOPIC INSTRUMENTS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TESTING
Online-Zugang:	Volltext bestellen
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