The #127 includes a precision sliding lens assembly permitting continuosly variable power factors between 2x and 3x.Positive stops are provided at both ends of the lens travel, and an engraved scale indicates the power in use.Recommended on telescopes wi...
Read MoreThe #127 includes a precision sliding lens assembly permitting continuosly variable power factors between 2x and 3x.Positive stops are provided at both ends of the lens travel, and an engraved scale indicates the power in use.Recommended on telescopes with F ratios of F6 and longer.
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