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40mm Dia.x350 EFL, Doublet lens
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Doublet lens, 40mm Dia.x167.7 EFL, Quality achromatic doublet lenses
Doublet lens, 20mm Dia.x52.7 EFL, Quality achromatic doublet lenses
Doublet lens, 25mm Dia.x600 EFL, Quality achromatic doublet lenses
Doublet lens, 63mm Dia.x600 EFL, Quality achromatic doublet lenses
Doublet lens, 80mm Dia.x1185 EFL, Quality achromatic doublet lenses
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