Light Glass Optics
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 Alignment Telescopes / Optical Tooling
 Thorlabs Outlet
 Line Tool Company
 New Focus
 Contrast Optical
 Melles Griot
 Microscopes- Leica, Mitutoyo, etc.
 Other Optics Items
 Collectible Optics
 Optical items on Sale!


 Lightglass Optics is where you can find the largest selection of Newport, Line Tool Company, OptoSigma, Thorlabs and other manufacturers of fine optomechanical equipment. By selling pre-owned equipment, Lightglass Optics can fill your Optical Research equipment needs at a substantial discount- saving those precious budget dollars. In addition, we have more Alignment Telescopes on our shelves than anybody else..anywhere!- currently over 100 - made by Keuffel and Esser (K&E), Brunson, Cubic Precision, Davidson Optronics, Engis, Taylor-Hobson and others. We also have supporting Optical Tooling to go with them. Just click on any line item to go to the page for that item.
 Thorlabs PH4-ST 4" Post Holder
Thorlabs PH4-ST 4" Post Holder
Thorlabs PH4-ST 4" Post Holder
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9 In Stock
The Thorlabs PH4-ST Post Holder is 4" tall, and accomodates standard 1/2" posts. It has a brass insert in the base which is threaded 1/4"-20 to mount on optical tables. Made of black-anodized aluminum, this post holder has been machined with a wide, square relief cut which provides a two-line contact along the mounted post. The thumbscrew has a spring-loaded plunger to hold the post securely.

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Thorlabs PH3-ST 3" Post Holder
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