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Brand Name Rating # of Ratings
Zen-Ray Zen-Ray 2015 ZRS HD (Summit) 8x42 Waterproof Binoculars 4.7 10
Bob's Knobs Bob's Knobs for Orion Secondary Set Screws on XT, SkyView & Others # CNsec30 5.0 7
Bob's Knobs Bob's Knobs for Celestron C6 f/10 Secondary with Metric Collimation Screw Threads # C6 5.0 4
Bob's Knobs Bob's Knobs for Celestron C8 f/10 Post-1980 Secondary with Standard Collimation Screw Threads # C8std 5.0 4
Bob's Knobs Bob's Knobs for Celestron C9.25 f/10 Secondary with Trifid Fastar Housing # C9.25fst 5.0 4
Bob's Knobs Bob's Knobs for Telrad Finder # Telrad 5.0 4
Bob's Knobs Bob's Knobs for Celestron C8 f/10 Secondary with EdgeHD Optics # C8edg 5.0 3
Bob's Knobs Bob's Knobs for Celestron C8 f/10 Secondary with Metric Collimation Screw Threads (not for EdgeHD or Hyperstar) # C8met 5.0 3
Bob's Knobs Bob's Knobs for Meade 10" f/10 with 3-Screw Secondary # M10-3 5.0 3
Zen-Ray Zen-Ray 2015 ZRS HD (Summit) 10x42 Waterproof Binoculars 4.7 3
Bob's Knobs Bob's Knobs for C11 f/10 with “Trifid” Fastar Secondary Housing and Metric Collimation Screw Threads # C11metfst 5.0 2
Bob's Knobs Bob's Knobs for Celestron C5 f/10 Secondary with Standard Collimation Screw Threads # C5std 5.0 2
Bob's Knobs Bob's Knobs for Celestron C9.25 f/10 Secondary with Standard Collimation Screw Threads # C9.25std 5.0 2
Bob's Knobs Bob's Knobs for Vixen R200SS Primary # R200pri 5.0 2
Bob's Knobs Bob's Knobs Springs for Meade Lightbridge (8", 10" & 12") f/5 Primary # CNspr 5.0 2
Zen-Ray Zen-Ray Vista 8x42 Waterproof Binoculars 4.0 2
Zen-Ray Zen-Ray ZEN ED2 8x43 Waterproof Binoculars with Dielectric Prism Coating 5.0 2
D&G Optical D&G Optical 5" f/12 5.0 1
Minolta Minolta Activa 10x50W 4.0 1
Minolta Minolta Classic 10x50 4.0 1
University Optics University Optics Abbe Orthoscopic 12.5mm 4.0 1
University Optics University Optics Abbe Orthoscopic 18mm 5.0 1
University Optics University Optics Abbe Orthoscopic 4mm 4.0 1
University Optics University Optics Abbe Orthoscopic 7mm 5.0 1
University Optics University Optics Abbe Orthoscopic 9mm 5.0 1
University Optics University Optics Konig II 24mm 4.0 1
University Optics University Optics Konig II 32mm 5.0 1
University Optics University Optics Konig MK-70 25mm 4.0 1
University Optics University Optics Konig MK-70 40mm 4.0 1
University Optics University Optics Konig MK-80 32mm 4.0 1
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