using a diagnostic lens set (without other advanced equipment) found that the practitioner's experience will reduce the number of diagnostic lenses needed after the 60th fit.16 Fortunately, many devices to aid with initial SL fitting or measure on-eye SL performance have been developed and ...
The '56 Pontiacs were mildly restyled, and four-door Catalina hardtops arrived in each series. Styling was less distinctive -- tester Tom McCahill said the '56 looked like "it was born on its nose" -- and ride comfort wasn't the best. A bore job stretched the V-8 to 316.6 cid, ...