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.
Bobs Knobs
Knobs for SkyWatcher Newtonian Secondary
$ 47.90
ready for shipping in 24
h
Bobs Knobs
Knobs for C8 f/10 Secondary with Metric Collimation Screw Threads
$ 63.00
ready for shipping in 24
h
Bobs Knobs
Knobs for C6 f/10 Secondary with Metric Collimation Screw Threads
$ 63.00
ready for shipping in 24
h
Bobs Knobs
Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
$ 63.00
ready for shipping in 24
h
Bobs Knobs
SCT 11" f/10 metric Fastar
$ 47.90
ready for shipping in 1-2
weeks
Bobs Knobs
Rändelschrauben für Sekundärspiegel von Celestron SC EdgeHD 800
$ 53.00
ready for shipping in 1-2
weeks
Bobs Knobs
SCT 10" f/10 3-screw
$ 41.90
ready for shipping in 1-2
weeks
Bobs Knobs
SCT 8" (post-1980 Standard)
$ 41.90
ready for shipping in 24
h
Bobs Knobs
SCT 9.25" Fastar
$ 47.90
ready for shipping in 1-2
weeks
Bobs Knobs
Knobs for Newtonian 12” Primary
$ 73.00
Sale price:
$ 65.26
ready for shipping in 24
h
Bobs Knobs
Knobs for Newtonian 10” Primary
$ 36.90
ready for shipping in 24
h
Bobs Knobs
R200SS primary
$ 63.00
ready for shipping in 24
h
Bobs Knobs
SCT 5" f/10 metric
$ 73.00
ready for shipping in 1-2
weeks
Bobs Knobs
AT6RC and AT8RC secondary
$ 63.00
ready for shipping in 1-2
weeks
Bobs Knobs
Bob's Knobs 14" Celestron SC imperial
$ 21.90
ready for shipping in 24
h
Bobs Knobs
Secondary mirror knurled screws for Meade Lightbridge Mini Dobsonian
$ 47.90
Sale price:
$ 31.47
ready for shipping in 24
h
Bobs Knobs
SCT 10" f/10 6-screw
$ 41.90
ready for shipping in 24
h
Bobs Knobs
SCT 12" 3- and 4-screw f/10
$ 41.90
ready for shipping in 1-2
weeks
Bobs Knobs
SCT 8" f/10 3-screw
$ 41.90
ready for shipping in 1-2
weeks
Bobs Knobs
SCT 11" f/10 standard
$ 41.90
ready for shipping in 1-2
weeks
Bobs Knobs
SCT 9.25" f/10 standard
$ 41.90
ready for shipping in 1-2
weeks
Bobs Knobs
C5 f/10 Metric
$ 41.90
ready for shipping in 1-2
weeks
Bobs Knobs
SCT 14" f/11 metric
$ 47.90
ready for shipping in 1-2
weeks
Bobs Knobs
Knobs for Meade Lightbridge and GSO Dobsonians Secondary Mirror
$ 47.90
ready for shipping in 24
h
Bobs Knobs
Knobs for C5 f/10 Secondary with Metric Collimation Screw Threads
$ 47.90
ready for shipping in 1-2
weeks
Bobs Knobs
SCT 14" f/11 set screw
$ 38.90
ready for shipping in 24
h
Bobs Knobs
SCT 11" f/10 metric
$ 41.90
ready for shipping in 3-5
weeks
Bobs Knobs
SNT 10" secondary
$ 35.90
Sale price:
$ 20.90
ready for shipping in 24
h
Bobs Knobs
SNT 6" secondary
$ 35.90
Sale price:
$ 20.90
ready for shipping in 24
h
Bobs Knobs
SCT 14" 6-screw exposed
$ 28.90
ready for shipping in 1-2
weeks
Bobs Knobs
AT12RC secondary
$ 31.90
ready for shipping in 24
h
Bobs Knobs
SCT 8" Hyperstar
$ 26.90
Sale price:
$ 15.68
ready for shipping in 24
h
Bobs Knobs
16" RC (GSO)
$ 26.90
ready for shipping in 24
h