They found a switch panel covered by a glass plate.
The collection also shows nearly the whole history of negative materials, from glass plates to film.
To see it from the control room, where the great glass plate opened out into the very jaws of space, was something else again.
He turned to the glass plate which divided the room into halves.
I have often wondered what happens to glass plates which are not up to standard.
The base was able to move freely on a glass plate.
They used glass plates and the subject had to sit without moving.
With a special camera, he made three consecutive photographs of every subject on a single glass plate.
She passed the chip across a glass plate on the face of the terminal.
Through a glass plate he could see a surprisingly complex activity.