A 1500 mesh, 0.00015" thick nickel screen is precisely mounted within a 3.0 mm copper athene-type, double grid. The double grid is firmly secured to provide a sturdy specimen to last indefinitely. The very accurate spacings may be used to check magnification. The fine wire projections aid in the measurement of field distortions. One bar and one space measures 16.94 µm.
| SKU | 40770 |
|---|---|
| Hazardous Materials | No |
| Product Brand | --- None --- |
| Featured Product | No |
| Featured Order | No |
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