| 摘要 |
<p>Distance indicator for motor vehicles. The indicator device comprises a housing (2) or other body which carries a disc (20) arranged to project a pair of lines (24, 25) onto the windscreen of a vehicle at vertically spaced positions to indicate the minimum stopping distances for certain speeds. The lines can be adjusted to horizontal by rotation of the disc (20) about an upright axis, and the vertical positions of the lines are pre-adjustable by sliding the housing (2) back and forth on a fixed base (1). A movable cover (28) is provided to shut off one or other, or both, of the projected lines.</p> |
