In some cases labs may wish to set up cribbing so that specific crib diameters are calculated. This might be the case when AR coating lenses, for example, where an AR machine has specific diameter requirements.
Specific crib diameters can be set up as a general default, as a default for lenses with AR coating, or specific rules can be set for a specific coating.
For example, a lab might wish to crib lenses to specifically 62mm, 65mm, or 70mm for all jobs with AR on them. A default crib set might look like:
