The optical flats are used to measure the flatness error of plano optical components with high surface quality.
| Material：UV grade Fused Silica | Dimension Tolerance：±0.2mm |
| Surface Figure：See details in the list | Parallelism：<1' |
| Bevel：0.2~0.5mmX45° | Surface Quality：60/40 |
| Rear Surface：Fine ground | Coating：None |
| Thickness Tolerance：See details in the list | |
