G052404329,BICONCAVE LENS; N-BK 7; D=12.7;
G052404525,BICONCAVE LENS; N-BK 7; D=12.7;
G052501000,NEUTRAL FILTER; T=50%; D=12.7; M
G052502000,NEUTRAL FILTER; T=20%; D=12.7; M
G052503000,NEUTRAL FILTER; T=10%; D=12.7; M
G052504000,NEUTRAL FILTER; T=5%; D=12.7; MO
G052505000,NEUTRAL FILTER; T=2%; D=12.7; MO
G052506000,NEUTRAL FILTER; T=1%; D=12.7; MO
