LASER-GUIDED POSITIONING DEVICE

A positioning device for enabling a user to accurately position the outermost end of an extendable member, such as an extension ladder, relative to a fixed, elevated position. The device includes light sources that provide angularly disposed light beams that terminate at desired points when the oute...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	CARL, KEITH, D
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	GYROSCOPIC INSTRUMENTS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TESTING
Online-Zugang:	Volltext bestellen
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