G311378322,BICONVEX LENS; N-BK 7; D=18; F=1
G311378329,BICONVEX LENS; N-BK 7; D=18; F=1
G311378525,BICONVEX LENS; N-BK 7; D=18; F=1
G311381000,BICONVEX LENS; N-BK 7; D=12.7; F
G311381322,BICONVEX LENS; N-BK 7; D=12.7; F
G311381329,BICONVEX LENS; N-BK 7; D=12.7; F
G311381525,BICONVEX LENS; N-BK 7; D=12.7; F
G311382000,BICONVEX LENS; N-BK 7; D=12.7; F
