Gestetner 10502 Copy Reference Manual page 131

Copying
C
Press the [2 Sided
2
D
Check the orientation.
Note
To change the copy orientation to "Top to Bottom", press the [Orientation]
key, then press the [Top to Bottom] key. If you do not, go to step F.
The default setting is "Top to Top". You can change this setting with the
copy User Tools. See
To select "Top to Bottom"
A Press the [Orientation] key.
B Press the [Top to Bottom] key then press the [OK] key.
E
Set your originals then press the {Start} key.
118
1 Sided] key.
P.314 "General Features".