![Crayford focuser / Optics / Camera lens / Joseph Petzval / Refracting telescope / Telescopic sight / Technology / Science / Telescopes / Eyepiece / Lenses Crayford focuser / Optics / Camera lens / Joseph Petzval / Refracting telescope / Telescopic sight / Technology / Science / Telescopes / Eyepiece / Lenses](https://www.pdfsearch.io/img/ae921be074e8ef48c011f24c313fbb10.jpg)
| Document Date: 2011-04-13 13:36:54 Open Document File Size: 441,29 KBShare Result on Facebook
Country United Kingdom / / Currency GBP / / / IndustryTerm decent travel scope / imaging / wide field imaging / little ultra portable travel scope / / Person Williams Optics / Ian King / / URL http /
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