Since somehow you missed the reference, how old were those scopes? What were the number range? They were upgraded and the upgrades can not be not retrofitted to older series.
The OP I commented on was the fact that since adjustments needed to be made throughout the day, there must be a scope integrity issue is wrong based on the fact that conditions actually do change durring many days.
The OP I commented on was the fact that since adjustments needed to be made throughout the day, there must be a scope integrity issue is wrong based on the fact that conditions actually do change durring many days.