Paillard M8 Instructions For Use Manual page 4

Meter
14
13
12
11
10
9
8
7
6
5
4
3
2
0,5
1,0 1,5 2,0
2,5
m.
Size of the image on the screen given by lenses of 20,
25
and 33 mm focal lengths in terms of the distance of
the projector from the screen.
=
~