7mm x 7mm divided into 100 squares. The center square is divided into 25 parts extended to the edge of the grid.
Each large square = 0.7mm square with a 1x objective
Each small square = 0.17mm square with a 1x objective.
Specifications | |
---|---|
Lines | Chrome deposition |
Chamfer | 0.010" – 0.020" |
Flatness | 2 waves or better |
Centering | Within 0.005" |
Glass Thickness | 1.5mm ± 0.2mm |
Surface Quality | 20/10 |
Parallelism | 2 min. |
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