Optical instrument with angle indicator and method for operating the same
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United States of America Patent
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Nov 30, 2010
Issued Date -
N/A
app pub date -
Jan 27, 2009
filing date -
Jan 27, 2009
priority date (Note) -
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Abstract
The present invention relates to an optical instrument with an angle indicator and a method for operating the same enabling simple monitoring of instrument inclination and operation in a large angle range. The optical instrument comprises a base portion, a head portion tiltable relative to the base portion within a device angle range, a base angle indicator attached to the base portion for determining a base angle of the base portion and a determination unit for determining an indication angle range of the head portion based on the base angle and the device angle range.
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