Meade Series 4000 #127 2x-3x Variable Barlow Lens (1.25") #07274. Maintains excellent image quality while offering the versatility of selecting either a 2X or 3X magnification factor.
Features a sliding locking ring permitting 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 setting. This features a 1.25" Barrel Size, 25mm aperture and the lens is multi-coated for maximum image contrast and light transmission.
Recommended for use on telescopes with focal ratios of f/6 and longer.