Prisms have several uses in optical systems.  For example, they can deviate a ray, disperse white light into the visible spectrum or erect an inverted image.  Right angle prisms are used to accomplish a 90 degree bend due to total internal reflection.  Depending on the mode of the incident of light on the inclined face, this prism may have an inverting effect with or without deviation.

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Equilateral Prisms
All prisms are 60 degrees x 60 degrees x 60 degrees.
Face is 25mm (1 inch).  Available in Glass and Acrylic.
Material Length   Number Price
Glass 50mm
SL215-AB 8.85  
Glass 75mm
SL215-AC 9.80  
Glass 100mm
SL215-AD 14.50  
Acrylic 50mm
SL215-BB 4.95  
Acrylic 75mm
SL215-BC 5.25  
Acrylic 100mm
SL215-BD 6.75  

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Right Angle Prisms
One angle is 90 degrees.  The other two angles are 60 and 30 degrees. 
First dimension is the length (25mm = 1 inch)
Acrylic Prisms
50 x 70 x 50mm  Acrylic Prism 
 No. SL215-EA. Only $6.00
75 x 28 x 38mm  Acrylic Prism
 No. SL215-EB.  Only $6.00   		 Optical Glass Prisms
75 x 28 x 38mm Glass Prism
No. SL215-FA.  Only $7.50
115 x 18 x 12 Optical Glass
  No. SL215-FB Only $7.50
prism2.jpg (10361 bytes) Slim Triangular Prisms
For index of refraction experiments. 75mm per side by 9mm thick
Optical Glass Triangle Prism
No. SL215-GA.  Only $7.50
 Made of Acrylic Triangle Prism
  No. SL215-GB. Only $5.95
 Rectangular Glass Block
To verify laws of refraction.  Highly polished.
115mm x 65mm x 20mm
  No. SL215-HA.  Only $7.50
prmhld2..gif (11282 bytes) Prism with Stand
At left.  Heavy cast iron base holds the prism steady.  Height can be adjusted and the prism can be rotated on its axis by 180 degrees or locked at any angle.  Comes with Equilateral prism 25mm x 100mm long. 
  No. SL215-SA.  Only $29.95
 Hollow Acrylic Prism
At right.  Equilateral prism, 45mm per side.  Has a hole in the top for adding fluids to study diffraction and dispersion.  Comes with funnel and stopper.
  No. SL215-TA.  Only $7.95