A portion of among letters regarding option personality are going to be not more than 150 mm (5 (1) The newest lamp can be built to follow the latest overall performance requirements regarding SAE Needed Practice J592 JUN92 (incorporated by the source, come across § 571.5), otherwise SAE Demanded Routine J592e (1972) (incorporated by reference, see § 571.5), to have combination, clearance, and you will front ps, being noted that have an excellent “PC” or “P2” into contact lens otherwise houses, relative to SAE Necessary Habit J759 JAN95 (included by reference, discover § 571.5).