From: pnance@precisionapplied.com   
      
   On Friday, May 27, 2016 at 3:59:18 AM UTC-7, j.dem...@gmail.com wrote:   
   > Hi All   
   >    
   > I was hoping someone might be able to help me. I plan to build a simple   
   interferometer, for which I require some 90 degree hollow roof prism mirrors    
   (or alternative roof mirrors) with roughly +- 10 arcsec dihedral angle   
   accuracy. I have checked the    
   usual scientific suppliers (Thorlabs etc) but costs are more than $300 for a   
   one-inch-square component, which is unfortunately too much for this particular   
   project. Is anyone able to recommend a more economic option? Ideally, I am   
   looking for a cost of <    
   $100 per roof mirror. Are they by chance a standard component in any existing   
   mass-produced products?   
   >    
   > Many thanks!   
   >    
   > John   
      
   I can help with some fused silica front surface mirrors at reasonable cost.   
   Send me email or call. 714-579-7812 sales@precisionapplied.com   
   Thanks,   
   Pete   
      
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