Distance measuring apparatus.

摘要

Distance measuring apparatus for determining when a point on a vehicle is at a predetermined distance from a point on an object relative to which the vehicle is movable, comprises a unit (16) having a first reflective surface mounted on the vehicle (10) on a line of sight from the point on the object (20) to the location of an eye (14) of an observer occupying the driver's seat in the vehicle (10) and a second reflective surface located adjacent to the first reflective surface and offset from said line of sight, the two reflective surfaces being oriented so that the image of the point on the object (20) reflected by the two reflective surfaces appears to be coincident with the object (20) when viewed along said line of sight.