Prisms
Product Code : EL-TLE-16935
- Square two primes 90º and 180º
- Size : 4 inches
- Flatness : Flat to ¼ wave length of sodium light
- Parallelism : parallel to±5 minutes of arc deviation
- Edges : straight cut angular, beveled ,glazed, fire polished
- Angles : Angular tolerance to ±5 seconds of arc deviation
- Finishes : free from surface imperfections when viewed under 10x magnification