1746 Mar. 134/1 Which Plate, when ground and polished, will not weigh above one third part of such rough Plate.
1883 J. D. Weeks 20 Rough plate is the crude plate-glass as it comes from the annealing oven.
1920 G. A. Hool & N. C. Johnson II. 1007 They are manufactured from the same thickness of rough plate as the standard thickness glass.
2006 K. Humphrey vii. 70/2 It was not a rough plate, but was a finished piece of glass, which had gone from the pot to the finishing room.