| Product Description |
Davidson 10" double sided fused silica optical flat. One side is accurate to .-338W, much better than 1/20w. The other side is almost 1/20w (.0540w) The surfaces are flawless. This flat was recently repolished to better than original specifications. It is uncoated. Davidson Model #D617-10.
Side 1 - P.V. - .0338W
Side 2 - P.V. - .0640W
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