G311325525,BICONVEX LENS; N-BK 7; D=25.4; F
G311328000,BICONVEX LENS; N-BAK 4; D=6; F=5
G311328322,BICONVEX LENS; N-BAK 4; D=6; F=5
G311328329,BICONVEX LENS; N-BAK 4; D=6; F=5
G311328525,BICONVEX LENS; N-BAK 4; D=6; F=5
G311329000,BICONVEX LENS; N-BAK 4; D=8; F=7
G311329322,BICONVEX LENS; N-BAK 4; D=8; F=7
G311329329,BICONVEX LENS; N-BAK 4; D=8; F=7
