| 摘要 |
A sighting device is mounted within the driver's compartment of a vehicle to assist in the accurate driving of the vehicle. A sight member provided with an opening is carried on one end of a telescopically extensible arm. The extensible arm and a swivel connection permit the sight member to be adjusted to a position in which it may be sighted through toward the dividing line of the road to give the vehicle driver an indication of the position of the vehicle relative to the center of the lane in which it is driven. A tinted glass for reducing glare and shimmer is removably mounted to overlie the opening by a clamp device.
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