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Expired
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GB14951/23A
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Individual
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Individual
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Publication of GB199389ApublicationCriticalpatent/GB199389A/en
G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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Physics & Mathematics
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Engineering & Computer Science
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General Physics & Mathematics
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Radar, Positioning & Navigation
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Remote Sensing
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Length-Measuring Instruments Using Mechanical Means
(AREA)
Abstract
199,389. Friedrich, K. June 13, 1922, [Convention date]. Plane - trigonometry calculators.-In an instrument for determining the resultant of two vector quantities and comprising a fixed graduated circle f, a graduated pivoted pointer i and a rotatable frame g supporting a slidable rule h, a cursor k sliding on the pointer and capable of passing between the members h, i bears a linear vernier scale m and concentric arcs r to enable the intersection of the members to be accurately read on both.
GB14951/23A1922-06-131923-06-07Improvements in instruments for determining the resultant of two vector quantities
ExpiredGB199389A
(en)
Improvements in Instruments for Determining the Compass Course of a Ship from the True Course, or for Determining the True Course from the Compass Course.