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Another sighting method was employing a reflective mirror. First patented in 1902, the Bézard compass consisted of a field compass with a mirror mounted above it. [81] [82] This arrangement enabled the user to align the compass with an objective while simultaneously viewing its bearing in the mirror. [81] [83]
MineCam 3 was the first to use an electronic compass for heading display. Tandy (Radio Shack) had developed a device using a flux gate sensor to give x & y components of the Earth's magnetic field which drove the orthogonal windings of a 360 degree mechanical indicator, for use as a car compass. I.A.Recordings discarded the indicator and used ...
The same year, a Mr. Bilal Ghanty from France patented a "Warning mirror for automobiles". [2] The Argus Dash Mirror, adjustable to any position to see the road behind, appeared in 1908. [3] [4] Earliest known rear-view mirror mounted on a racing vehicle appeared on Ray Harroun's Marmon race car at the inaugural Indianapolis 500 race in 1911. [5]
1980: Electronic Auto Compass with new mechanism on the Toyota Crown. 1981: The earlier research of CATC led to the first generation of automobile navigation systems from Japanese companies Honda, Nissan and Toyota. They used dead reckoning technology. [5] 1981: Honda's Electro Gyrocator was the
SEL - SEL equipment additionally included message center with trip computer, vehicle information center and compass; electrochromic auto-dim rearview center rear view mirror; heated side mirrors; fog lamps; air-conditioning ducted to the rear of the front console, perimeter security alarm; automatic headlamps; automatic temp control; chrome ...
Floating-card compass with prismatic sight (bearing 220° through eyepiece). The marine hand compass, or hand bearing compass|hand-bearing compass as it is termed in nautical use, has been used by small-boat or inshore sailors since at least the 1920s to keep a running course or to record precise bearings to landmarks on shore in order to determine position via the resection technique.
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It is present because while these mirrors' convexity gives them a useful field of view, it also makes objects appear smaller. Since smaller-appearing objects seem farther away than they actually are, a driver might make a maneuver such as a lane change assuming an adjacent vehicle is a safe distance behind, when in fact it is quite a bit closer ...
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