quarter plate

The quarter-plate size will be found most suitable, and these may be successfully enlarged to 12 by 10.

Provision is then made to fit into the frame a quarter-plate printing frame, in which is placed the negative.

In half-plate, and three-quarter-plate types of watches part of the disc is cut away.

The hairspring stud is set in the cock like the Elgin three-quarter-plate movement.

The time taken to transmit a photograph, quarter-plate size, is about fifteen minutes.