Luneau Technology Briot perception2 - Page 71

Using your Edger...Special case
3-70
LTO
3.3.3.2.2 MANUAL GROOVE SCREEN
Screen 3-37 : Manual groove screen
C
Angular
position
Index
Front face developed curve
Groove centre developed curve
Rear face developed curve
Lens section at posi-
tion of index
Lens thickness
A
B
Developed lens profile
Lens shape seen
from the front
Re-feeling
Displacement
of the groove
forward
Displacement
of the groove
darkward
Modification of
the position of
the groove
Stopping
the edging
Movement of
the index
Displacement
of a finishing
point
Offset value
Base value
finishing
Start of 
finishing
Offset value
of the 
finishing
Depth / Width
finishing