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Bobs-Knobs

Almost in the middle of the triangle formed by Indianapolis, Columbus and Cincinnati is the company Bob's Knobs, in a village in the eastern part of the US state of Indiana. Bob's Knobs supplies a huge range of screws, mainly to the automotive industry, but also to local farmers and tool manufacturers.

Luckily Bob the company founder has, for years, been an avid amateur astronomer and so also develops screws, pins and bolts for telescopes, mounts and tripods. The company's astronomical range of products is best known for its collimation screws for Schmidt-Cassegrain, Newton and Maksutov telescopes.

Products 1 - 36 of 36
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Bobs Knobs Skywatcher Mak-Newton 190 secondary
Bobs Knobs
Skywatcher Mak-Newton 190 secondary
$ 27.90
ready for shipping in 24 h
Bobs Knobs Springs for Newtonian 8”, 10”, and 12” Primary
Bobs Knobs
Springs for Newtonian 8”, 10”, and 12” Primary
$ 43.90
ready for shipping in 24 h
Bobs Knobs SCT 10" f/10 6-screw
Bobs Knobs
SCT 10" f/10 6-screw
$ 43.90
ready for shipping in 24 h
Bobs Knobs SCT 11" f/10 standard
Bobs Knobs
SCT 11" f/10 standard
$ 43.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 12" 3- and 4-screw f/10
Bobs Knobs
SCT 12" 3- and 4-screw f/10
$ 43.90
ready for shipping in 1-2 weeks
Bobs Knobs Knobs for Newtonian 12” Primary
Bobs Knobs
Knobs for Newtonian 12” Primary
$ 75.00
ready for shipping in 24 h
Bobs Knobs SCT 8" (post-1980 Standard)
Bobs Knobs
SCT 8" (post-1980 Standard)
$ 43.90
ready for shipping in 24 h
Bobs Knobs SCT 9.25" Fastar
Bobs Knobs
SCT 9.25" Fastar
$ 48.90
ready for shipping in 24 h
Bobs Knobs SNT 6" secondary
Bobs Knobs
SNT 6" secondary
$ 36.90
ready for shipping in 24 h
Bobs Knobs SNT 10" secondary
Bobs Knobs
SNT 10" secondary
$ 36.90
ready for shipping in 24 h
Bobs Knobs SCT 11" f/10 metric Fastar
Bobs Knobs
SCT 11" f/10 metric Fastar
$ 48.90
ready for shipping in 24 h
Bobs Knobs SCT 14" f/11 metric
Bobs Knobs
SCT 14" f/11 metric
$ 48.90
ready for shipping in 1-2 weeks
Bobs Knobs Secondary mirror knurled screws for Meade Lightbridge Mini Dobsonian
Bobs Knobs
Secondary mirror knurled screws for Meade Lightbridge Mini Dobsonian
$ 48.90
ready for shipping in 24 h
Bobs Knobs Knobs for Meade Lightbridge and GSO Dobsonians Secondary Mirror
Bobs Knobs
Knobs for Meade Lightbridge and GSO Dobsonians Secondary Mirror
$ 48.90
ready for shipping in 24 h
Bobs Knobs SCT 8" Hyperstar
Bobs Knobs
SCT 8" Hyperstar
$ 27.90
ready for shipping in 24 h
Bobs Knobs Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
Bobs Knobs
Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
$ 65.00
ready for shipping in 24 h
Bobs Knobs R200SS primary
Bobs Knobs
R200SS primary
$ 65.00
ready for shipping in 1-2 weeks
Bobs Knobs Knobs for C8 f/10 Secondary with Metric Collimation Screw Threads
Bobs Knobs
Knobs for C8 f/10 Secondary with Metric Collimation Screw Threads
$ 65.00
ready for shipping in 24 h
Bobs Knobs Knobs for Newtonian 10” Primary
Bobs Knobs
Knobs for Newtonian 10” Primary
$ 37.90
ready for shipping in 24 h
Bobs Knobs GM-8, G-11 tripod
Bobs Knobs
GM-8, G-11 tripod
$ 37.90
ready for shipping in 24 h
Bobs Knobs 16" RC (GSO)
Bobs Knobs
16" RC (GSO)
$ 27.90
ready for shipping in 24 h
Bobs Knobs AT12RC secondary
Bobs Knobs
AT12RC secondary
$ 32.90
ready for shipping in 24 h
Bobs Knobs SCT 8" f/10 3-screw
Bobs Knobs
SCT 8" f/10 3-screw
$ 43.90
ready for shipping in 1-2 weeks
Bobs Knobs C5 f/10 Metric
Bobs Knobs
C5 f/10 Metric
$ 43.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 9.25" f/10 standard
Bobs Knobs
SCT 9.25" f/10 standard
$ 43.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 11" f/10 metric
Bobs Knobs
SCT 11" f/10 metric
$ 43.90
ready for shipping in 3-5 weeks
Bobs Knobs SCT 14" f/11 set screw
Bobs Knobs
SCT 14" f/11 set screw
$ 40.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 10" f/10 3-screw
Bobs Knobs
SCT 10" f/10 3-screw
$ 43.90
ready for shipping in 24 h
Bobs Knobs SCT 14" 6-screw exposed
Bobs Knobs
SCT 14" 6-screw exposed
$ 29.90
ready for shipping in 1-2 weeks
Bobs Knobs SCT 5" f/10 metric
Bobs Knobs
SCT 5" f/10 metric
$ 75.00
ready for shipping in 1-2 weeks
Bobs Knobs Knobs for C6 f/10 Secondary with Metric Collimation Screw Threads
Bobs Knobs
Knobs for C6 f/10 Secondary with Metric Collimation Screw Threads
$ 65.00
ready for shipping in 24 h
Bobs Knobs Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
Bobs Knobs
Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
$ 55.00
ready for shipping in 24 h
Bobs Knobs Knobs for C5 f/10 Secondary with Metric Collimation Screw Threads
Bobs Knobs
Knobs for C5 f/10 Secondary with Metric Collimation Screw Threads
$ 48.90
ready for shipping in 1-2 weeks
Bobs Knobs Knobs for SkyWatcher Newtonian Secondary
Bobs Knobs
Knobs for SkyWatcher Newtonian Secondary
$ 48.90
ready for shipping in 24 h
Bobs Knobs AT6RC and AT8RC secondary
Bobs Knobs
AT6RC and AT8RC secondary
$ 65.00
ready for shipping in 1-2 weeks
Bobs Knobs Knobs for Telrad Finder
Bobs Knobs
Knobs for Telrad Finder
$ 43.90
ready for shipping in 1-2 weeks