-Clamps the Picture the Application Method:
1- Puts the main body PHOTO
2-It's transparent insertion main (for example on chart)
a:First about to A green colour part inset lead plane
b;A second about to B plate the base drown a windshield
c:To push C the switch instruct in fixed.
d:Moves the D palace go-between may adjust the angle and the direction wilfully.
.... I think I'll spare you Method B....