William Optics 90 degree Erecting Prism

High quality 90 degree erecting prism for dual Astronomical and Terrestrial use.

• High quality BAK4 with new FMC coating
  
• Materials Entirely machined aluminum Angle 90 degree.
  
• Prism clear aperture 40 mm
  
• 2"-1.25" adapter with brass compression rings.
  
• Weight 560 g