Question artists

[Amateur]

Сообщение от Artem

Whiteprint - a device for manual copying of drawings, maps, etc. To copy the image (the original) is located on the illuminated table top Face-up, covered with a sheet of blank paper and hand to the light, fortified writing device.

Thank you, I, by the way, and thought, why give in any case the size of the portrait. They do not coincide with the size of the figure is approximately two times, and a stereoscope comparison shows that the proportion of width less than the length, and there is some distortion of the vertical axis. "Draloskop" also gives a copy of 1:1.
And why "draloskop? Meaning? It would be simpler to make a photocopy. At that time, although there was no copy machines (they appeared in 1948), but were "photostat" - a device for copying documents at the special photo paper roll displayed by an appeal directly to the unit. Slow down, than in the modern copy machine, but still quite acceptable.