Essilor Instruments DELTA

The lens is centered and ready to be blocked.
To block the lens, refer to the section Centering a lens > Blocking a lens (F p.62).
b. Centering a lens using manufacturer markings
Prerequisite
• The markings must be clear
• The lens must at least have the following markings:
1. Centering cross
2. Centering marks
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Delta - Edging System > V1- 02-2020
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USER MANUAL> IV. CENTER AND BLOCK A LENS