Range finder for bow hunter

A device for determining the range/height of distant objects using the triangulation method. The device includes a palm-sized housing having merely four main components; (1) a retractable tape measure; (2) a sighting slot; (3) a pendulum and (4) a calibrated graph. A reel is disposed on the rear wal...

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Bibliographic Details
Main Author BYRD WILLIAM H
Format Patent
LanguageEnglish
Published 25.11.2003
Edition7
Subjects
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Summary:A device for determining the range/height of distant objects using the triangulation method. The device includes a palm-sized housing having merely four main components; (1) a retractable tape measure; (2) a sighting slot; (3) a pendulum and (4) a calibrated graph. A reel is disposed on the rear wall of the housing to provide means for retracting the tape measure. The calibrated graph is imprinted on the face of a thin sheet, which sheet is attached to the front wall of the housing. A transparent cover is disposed to protect the face of the sheet. An offset portion on the sheet functions to prevent the pendulum from swinging freely when the device is not in use. The sighting slot is positioned at the top of the housing.
Bibliography:Application Number: US20010906641