| 摘要 |
<p>The advertising display panel consists of a sheet of transparent material with pockets to hold posters. The sheet is flexible and may be rolled like a blind on to a horizontal roller in a housing. The housing is rectangular, with its base being open to receive the sheet and lower rail. The housing forms an arm which is attached to a wall at one end. It is able to pivot through 90 deg. between a position parallel to the wall, and a position at right angles to the wall. A cord operated mechanism locks the arm in the selected position.</p> |
