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Specifications |   | 
| Diameter Tolerance: | +0/-0.005” | 
| Thickness Tolerance: | ±0.010” | 
| Parallelism: | < 5 arc min. | 
| Clear Aperture: | > 85% of diameter | 
| Chamfer: | 0.3mm ´ 45° | 
| Surface Figure: | l/10 wave at 632.8nm | 
| Surface Quality: | 10-5 scratch-dig | 
| Part No. | Material | Length (L) | Width (W) | Thickness | Surface Figure | Surface Quality | 
| B-WS-0525 | BK7 | 0.50” | 0.50” | 0.250” | l/10 | 10-5 | 
| B-WS-1008 | BK7 | 1.00” | 1.00” | 2mm | l/2 | 10-5 | 
| B-WS-1025 | BK7 | 1.00” | 1.00” | 0.250” | l/10 | 10-5 | 
| B-WS-1038 | BK7 | 1.00” | 1.00” | 0.375” | l/10 | 10-5 | 
| B-WS-1538 | BK7 | 1.50” | 1.50” | 0.375” | l/10 | 10-5 | 
| B-WS-2006 | BK7 | 2.00” | 2.00” | 1.5mm | 1l / inch | 40-20 | 
| B-WS-2038 | BK7 | 2.00” | 2.00” | 0.375” | l/10 | 10-5 | 
|   |   |   |   |   |   |   | 
| UF-WS-0525 | UV Fused Silica | 0.50” | 0.50” | 0.250” | l/10 | 10-5 | 
| UF-WS-1008 | UV Fused Silica | 1.00” | 1.00” | 2mm | l/2 | 20-10 | 
| UF-WS-1025 | UV Fused Silica | 1.00” | 1.00” | 0.250” | l/10 | 10-5 | 
| UF-WS-2038 | UV Fused Silica | 2.00” | 2.00” | 0.375” | l/10 | 10-5 | 
|   |   |   |   |   |   |   | 
| B-WR-1106 | BK7 | 1.126” | 0.563” | 0.125” | l/10 | 10-5 | 
| B-WR-1610 | BK7 | 1.575” | 0.984” | 0.375” | l/10 | 10-5 | 
|   |   |   |   |   |   |   | 
| UF-WR-1106 | UV Fused Silica | 1.126” | 0.563” | 0.125” | l/10 | 10-5 | 
| UF-WR-1610 | UV Fused Silica | 1.575” | 0.984” | 0.375” | l/10 | 10-5 |