Frequently Asked Questions

The watch glass is made of sapphire.

The diameter range of the watch glass is Φ6mm to Φ50mm.

The surface quality of the watch glass is S/D 80/50 20/10 scratch-dig (High Precision).

The tolerance range of the watch glass is +-0.02 to +-0.1 R 300 to R 40.

The watch glass can be used as a window for a watch case or for laser optics.

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