Lalizas Signalling Mirror - Heliograph 7cm x 7cm

Signalling Mirror 7 x 7 cm User Instructions Hold foresight in left hand with arm fully extended
Hold the signalling mirror in right hand toward the sunlight, facing the back of the mirror
Align the holes of the foresight and the mirror on the target
Move mirror until the reflection of the sun from the mirror can be seen on the foresight and a shadow point appears in its hole
The ray is now directed at the target